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https://github.com/exceljs/exceljs

Excel Workbook Manager
https://github.com/exceljs/exceljs

csv exceljs hacktoberfest streaming-workbook workbook workbook-writer worksheet xlsx xlsx-workbook xlsxreader xlsxwriter

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Excel Workbook Manager

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README 

        
# ExcelJS



[![Build Status](https://github.com/exceljs/exceljs/actions/workflows/tests.yml/badge.svg?branch=master&event=push)](https://github.com/exceljs/exceljs/actions/workflows/tests.yml)



Read, manipulate and write spreadsheet data and styles to XLSX and JSON.



Reverse engineered from Excel spreadsheet files as a project.



# Translations



* [中文文档](README_zh.md)



# Installation



```shell

npm install exceljs

```



# New Features!



* Merged [Add pivot table with limitations #2551](https://github.com/exceljs/exceljs/pull/2551). 
 Many thanks to Protobi and Michael for this contribution!

* Merged [fix: styles rendering in case when "numFmt" is present in conditional formatting rules (resolves #1814) #1815](https://github.com/exceljs/exceljs/pull/1815). 
 Many thanks to [@andreykrupskii](https://github.com/andreykrupskii) for this contribution!

* Merged [inlineStr cell type support #1575 #1576](https://github.com/exceljs/exceljs/pull/1576). 
 Many thanks to [@drdmitry](https://github.com/drdmitry) for this contribution!

* Merged [Fix parsing of boolean attributes #1849](https://github.com/exceljs/exceljs/pull/1849). 
 Many thanks to [@bno1](https://github.com/bno1) for this contribution!

* Merged [add optional custom auto-filter to table #1670](https://github.com/exceljs/exceljs/pull/1670). 
 Many thanks to [@thambley](https://github.com/thambley) for this contribution!

* Merged [Deep copy inherited style #1850](https://github.com/exceljs/exceljs/pull/1850). 
 Many thanks to [@ikzhr](https://github.com/ikzhr) for this contribution!

* Merged [Upgrade actions/cache and actions/setup-node #1846](https://github.com/exceljs/exceljs/pull/1846). 
 Many thanks to [@cclauss](https://github.com/cclauss) for this contribution!

* Merged [Check object keys in isEqual #1831](https://github.com/exceljs/exceljs/pull/1831). 
 Many thanks to [@bno1](https://github.com/bno1) for this contribution!

* Merged [Add v17 to testing workflow #1856](https://github.com/exceljs/exceljs/pull/1856). 
 Many thanks to [@Siemienik](https://github.com/Siemienik) for this contribution!

* Merged [Upgrade jszip to its latest version to date. This version does not have any vulnerability found by Snyk so far #1895](https://github.com/exceljs/exceljs/pull/1895). 
 Many thanks to [@ValerioSevilla](https://github.com/ValerioSevilla) for this contribution!

* Merged [Update README.md #1677](https://github.com/exceljs/exceljs/pull/1677). 
 Many thanks to [@xjrcode](https://github.com/xjrcode) for this contribution!

* Merged [(docs): set prototype of RegExp correctly. #1700](https://github.com/exceljs/exceljs/pull/1700). 
 Many thanks to [@joeldenning](https://github.com/joeldenning) for this contribution!

* Merged [Added timeouts to github actions #1733](https://github.com/exceljs/exceljs/pull/1733). 
 Many thanks to [@alexbjorlig](https://github.com/alexbjorlig) for this contribution!

* Merged [fix issue 1676 #1701](https://github.com/exceljs/exceljs/pull/1701). 
 Many thanks to [@skypesky](https://github.com/skypesky) for this contribution!

* Merged [ExcelJS/ExcelJS#2237 : Update CI Tests, Drop support for Node v8  #2242](https://github.com/exceljs/exceljs/pull/2242). 
 Many thanks to [@Siemienik](https://github.com/Siemienik) for this contribution!

* Merged [Fix types for getWorksheet() #2223](https://github.com/exceljs/exceljs/pull/2223). 
 Many thanks to [@hfhchan-plb](https://github.com/hfhchan-plb) for this contribution!

* Merged [add characters cannot be used for worksheet name #2126](https://github.com/exceljs/exceljs/pull/2126). 
 Many thanks to [@tkm-kj](https://github.com/tkm-kj) for this contribution!

* Merged [Fix issue #1753 Reject promise when workbook reader is writing to temporary file stream and error occurs #1756](https://github.com/exceljs/exceljs/pull/1756). 
 Many thanks to [@pauliusg](https://github.com/pauliusg) for this contribution!

* Merged [README.md to have correct link for Streaming XLSX #2186](https://github.com/exceljs/exceljs/pull/2186). 
 Many thanks to [@wulfsolter](https://github.com/wulfsolter) for this contribution!

* Merged [Added a polyfill of promise.finally to support lower versions of Firefox. #1982](https://github.com/exceljs/exceljs/pull/1982). 
 Many thanks to [@DemoJj](https://github.com/DemoJj) for this contribution!

* Merged [Fix read this.worksheet before assign it #1934](https://github.com/exceljs/exceljs/pull/1934). 
 Many thanks to [@ZyqGitHub1](https://github.com/ZyqGitHub1) for this contribution!

* Merged [chore: upgrade jszip to ^3.10.1 #2211](https://github.com/exceljs/exceljs/pull/2211). 
 Many thanks to [@jarrod-cocoon](https://github.com/jarrod-cocoon) for this contribution!

* Merged [fixed spelling error in README.md file #2208](https://github.com/exceljs/exceljs/pull/2208). 
 Many thanks to [@HugoP27](https://github.com/HugoP27) for this contribution!

* Merged [fix: Fix xlsx.writeFile() not catching error when error occurs #2244](https://github.com/exceljs/exceljs/pull/2244). 
 Many thanks to [@zurmokeeper](https://github.com/zurmokeeper) for this contribution!

* Merged [Improve worksheets' naming validation logic. #2257](https://github.com/exceljs/exceljs/pull/2257). 
 Many thanks to [@Siemienik](https://github.com/Siemienik) for this contribution!

* Merged [fix issue 2125 - spliceRows remove last row #2140](https://github.com/exceljs/exceljs/pull/2140). 
 Many thanks to [@babu-ch](https://github.com/babu-ch) for this contribution!

* Merged [fix: fix the loss of column attributes due to incorrect column order #2222](https://github.com/exceljs/exceljs/pull/2222). 
 Many thanks to [@cpaiyueyue](https://github.com/cpaiyueyue) for this contribution!

* Merged [Fix: Sheet Properties Types #2327](https://github.com/exceljs/exceljs/pull/2327). 
 Many thanks to [@albeniraouf](https://github.com/albeniraouf) for this contribution!

* Merged [Use node 18 LTS for tsc, and benchmark. Add node 20. to test matrix. … #2354](https://github.com/exceljs/exceljs/pull/2354). 
 Many thanks to [@Siemienik](https://github.com/Siemienik) for this contribution!

* Merged [Add missing tooltip attribute to CellHyperlinkValue index.d.ts #2350](https://github.com/exceljs/exceljs/pull/2350). 
 Many thanks to [@NiklasPor](https://github.com/NiklasPor) for this contribution!

* Merged [Increase resilience to generating large workbooks #2320](https://github.com/exceljs/exceljs/pull/2320). 
 Many thanks to [@hfhchan-plb](https://github.com/hfhchan-plb) for this contribution!

* Merged [repair all 'c2fo.io' links ('c2fo.github.io') #2324](https://github.com/exceljs/exceljs/pull/2324). 
 Many thanks to [@justintunev7](https://github.com/justintunev7) for this contribution!

* Merged [fix: fix type definitions about last column, formula values and protection #2309](https://github.com/exceljs/exceljs/pull/2309). 
 Many thanks to [@gltjk](https://github.com/gltjk) for this contribution!

* Merged [fix: add spinCount field for WorksheetProtection type #2284](https://github.com/exceljs/exceljs/pull/2284). 
 Many thanks to [@damingerdai](https://github.com/damingerdai) for this contribution!

* Merged [Add type definition for WorksheetModel.merges #2281](https://github.com/exceljs/exceljs/pull/2281). 
 Many thanks to [@ytjmt](https://github.com/ytjmt) for this contribution!



# Contributions



Contributions are very welcome! It helps me know what features are desired or what bugs are causing the most pain.



I have just one request; If you submit a pull request for a bugfix, please add a unit-test or integration-test (in the spec folder) that catches the problem.

 Even a PR that just has a failing test is fine - I can analyse what the test is doing and fix the code from that.



Note: Please try to avoid modifying the package version in a PR.

Versions are updated on release and any change will most likely result in merge collisions.



To be clear, all contributions added to this library will be included in the library's MIT licence.



### Let's chat together:



[![SiemaTeam](https://discordapp.com/api/guilds/976854442009825321/widget.png?style=banner2)](https://discord.gg/siema)



# Contents






# Importing[⬆](#contents)



```javascript

const ExcelJS = require('exceljs');

```



## ES5 Imports[⬆](#contents)



To use the ES5 transpiled code, for example for node.js versions older than 10, use the dist/es5 path.



```javascript

const ExcelJS = require('exceljs/dist/es5');

```



**Note:** The ES5 build has an implicit dependency on a number of polyfills which are no longer

 explicitly added by exceljs.

 You will need to add "core-js" and "regenerator-runtime" to your dependencies and

 include the following requires in your code before the exceljs import:



```javascript

// polyfills required by exceljs

require('core-js/modules/es.promise');

require('core-js/modules/es.string.includes');

require('core-js/modules/es.object.assign');

require('core-js/modules/es.object.keys');

require('core-js/modules/es.symbol');

require('core-js/modules/es.symbol.async-iterator');

require('regenerator-runtime/runtime');



const ExcelJS = require('exceljs/dist/es5');

```



For IE 11, you'll also need a polyfill to support unicode regex patterns. For example,



```js

const rewritePattern = require('regexpu-core');

const {generateRegexpuOptions} = require('@babel/helper-create-regexp-features-plugin/lib/util');



const {RegExp} = global;

try {

  new RegExp('a', 'u');

} catch (err) {

  global.RegExp = function(pattern, flags) {

    if (flags && flags.includes('u')) {

      return new RegExp(rewritePattern(pattern, flags, generateRegexpuOptions({flags, pattern})));

    }

    return new RegExp(pattern, flags);

  };

  global.RegExp.prototype = RegExp.prototype;

}

```



## Browserify[⬆](#contents)



ExcelJS publishes two browserified bundles inside the dist/ folder:



One with implicit dependencies on core-js polyfills...

```html



```



And one without...

```html



```



# Interface[⬆](#contents)



## Create a Workbook[⬆](#contents)



```javascript

const workbook = new ExcelJS.Workbook();

```



## Set Workbook Properties[⬆](#contents)



```javascript

workbook.creator = 'Me';

workbook.lastModifiedBy = 'Her';

workbook.created = new Date(1985, 8, 30);

workbook.modified = new Date();

workbook.lastPrinted = new Date(2016, 9, 27);

```



```javascript

// Set workbook dates to 1904 date system

workbook.properties.date1904 = true;

```



## Set Calculation Properties[⬆](#contents)



```javascript

// Force workbook calculation on load

workbook.calcProperties.fullCalcOnLoad = true;

```



## Workbook Views[⬆](#contents)



The Workbook views controls how many separate windows Excel will open when viewing the workbook.



```javascript

workbook.views = [

  {

    x: 0, y: 0, width: 10000, height: 20000,

    firstSheet: 0, activeTab: 1, visibility: 'visible'

  }

]

```



## Add a Worksheet[⬆](#contents)



```javascript

const sheet = workbook.addWorksheet('My Sheet');

```



Use the second parameter of the addWorksheet function to specify options for the worksheet.



For Example:



```javascript

// create a sheet with red tab colour

const sheet = workbook.addWorksheet('My Sheet', {properties:{tabColor:{argb:'FFC0000'}}});



// create a sheet where the grid lines are hidden

const sheet = workbook.addWorksheet('My Sheet', {views: [{showGridLines: false}]});



// create a sheet with the first row and column frozen

const sheet = workbook.addWorksheet('My Sheet', {views:[{state: 'frozen', xSplit: 1, ySplit:1}]});



// Create worksheets with headers and footers

const sheet = workbook.addWorksheet('My Sheet', {

  headerFooter:{firstHeader: "Hello Exceljs", firstFooter: "Hello World"}

});



// create new sheet with pageSetup settings for A4 - landscape

const worksheet =  workbook.addWorksheet('My Sheet', {

  pageSetup:{paperSize: 9, orientation:'landscape'}

});

```



## Remove a Worksheet[⬆](#contents)



Use the worksheet `id` to remove the sheet from workbook.



For Example:



```javascript

// Create a worksheet

const sheet = workbook.addWorksheet('My Sheet');



// Remove the worksheet using worksheet id

workbook.removeWorksheet(sheet.id)

```



## Access Worksheets[⬆](#contents)

```javascript

// Iterate over all sheets

// Note: workbook.worksheets.forEach will still work but this is better

workbook.eachSheet(function(worksheet, sheetId) {

  // ...

});



// fetch sheet by name

const worksheet = workbook.getWorksheet('My Sheet');



// fetch sheet by id

// INFO: Be careful when using it!

// It tries to access to `worksheet.id` field. Sometimes (really very often) workbook has worksheets with id not starting from 1.

// For instance It happens when any worksheet has been deleted.

// It's much more safety when you assume that ids are random. And stop to use this function.

// If you need to access all worksheets in a loop please look to the next example.

const worksheet = workbook.getWorksheet(1);



// access by `worksheets` array:

workbook.worksheets[0]; //the first one;



```



It's important to know that `workbook.getWorksheet(1) != Workbook.worksheets[0]` and `workbook.getWorksheet(1) != Workbook.worksheets[1]`,

because `workbook.worksheets[0].id` may have any value.



## Worksheet State[⬆](#contents)



```javascript

// make worksheet visible

worksheet.state = 'visible';



// make worksheet hidden

worksheet.state = 'hidden';



// make worksheet hidden from 'hide/unhide' dialog

worksheet.state = 'veryHidden';

```



## Worksheet Properties[⬆](#contents)



Worksheets support a property bucket to allow control over some features of the worksheet.



```javascript

// create new sheet with properties

const worksheet = workbook.addWorksheet('sheet', {properties:{tabColor:{argb:'FF00FF00'}}});



// create a new sheet writer with properties

const worksheetWriter = workbookWriter.addWorksheet('sheet', {properties:{outlineLevelCol:1}});



// adjust properties afterwards (not supported by worksheet-writer)

worksheet.properties.outlineLevelCol = 2;

worksheet.properties.defaultRowHeight = 15;

```



**Supported Properties**



| Name             | Default    | Description |

| ---------------- | ---------- | ----------- |

| tabColor         | undefined  | Color of the tabs |

| outlineLevelCol  | 0          | The worksheet column outline level |

| outlineLevelRow  | 0          | The worksheet row outline level |

| defaultRowHeight | 15         | Default row height |

| defaultColWidth  | (optional) | Default column width |

| dyDescent        | 55         | TBD |



### Worksheet Metrics[⬆](#contents)



Some new metrics have been added to Worksheet...



| Name              | Description |

| ----------------- | ----------- |

| rowCount          | The total row size of the document. Equal to the row number of the last row that has values. |

| actualRowCount    | A count of the number of rows that have values. If a mid-document row is empty, it will not be included in the count. |

| columnCount       | The total column size of the document. Equal to the maximum cell count from all of the rows |

| actualColumnCount | A count of the number of columns that have values. |



## Page Setup[⬆](#contents)



All properties that can affect the printing of a sheet are held in a pageSetup object on the sheet.



```javascript

// create new sheet with pageSetup settings for A4 - landscape

const worksheet =  workbook.addWorksheet('sheet', {

  pageSetup:{paperSize: 9, orientation:'landscape'}

});



// create a new sheet writer with pageSetup settings for fit-to-page

const worksheetWriter = workbookWriter.addWorksheet('sheet', {

  pageSetup:{fitToPage: true, fitToHeight: 5, fitToWidth: 7}

});



// adjust pageSetup settings afterwards

worksheet.pageSetup.margins = {

  left: 0.7, right: 0.7,

  top: 0.75, bottom: 0.75,

  header: 0.3, footer: 0.3

};



// Set Print Area for a sheet

worksheet.pageSetup.printArea = 'A1:G20';



// Set multiple Print Areas by separating print areas with '&&'

worksheet.pageSetup.printArea = 'A1:G10&&A11:G20';



// Repeat specific rows on every printed page

worksheet.pageSetup.printTitlesRow = '1:3';



// Repeat specific columns on every printed page

worksheet.pageSetup.printTitlesColumn = 'A:C';

```



**Supported pageSetup settings**



| Name                  | Default       | Description |

| --------------------- | ------------- | ----------- |

| margins               |               | Whitespace on the borders of the page. Units are inches. |

| orientation           | 'portrait'    | Orientation of the page - i.e. taller (portrait) or wider (landscape) |

| horizontalDpi         | 4294967295    | Horizontal Dots per Inch. Default value is -1 |

| verticalDpi           | 4294967295    | Vertical Dots per Inch. Default value is -1 |

| fitToPage             |               | Whether to use fitToWidth and fitToHeight or scale settings. Default is based on presence of these settings in the pageSetup object - if both are present, scale wins (i.e. default will be false) |

| pageOrder             | 'downThenOver'| Which order to print the pages - one of ['downThenOver', 'overThenDown'] |

| blackAndWhite         | false         | Print without colour |

| draft                 | false         | Print with less quality (and ink) |

| cellComments          | 'None'        | Where to place comments - one of ['atEnd', 'asDisplayed', 'None'] |

| errors                | 'displayed'   | Where to show errors - one of ['dash', 'blank', 'NA', 'displayed'] |

| scale                 | 100           | Percentage value to increase or reduce the size of the print. Active when fitToPage is false |

| fitToWidth            | 1             | How many pages wide the sheet should print on to. Active when fitToPage is true  |

| fitToHeight           | 1             | How many pages high the sheet should print on to. Active when fitToPage is true  |

| paperSize             |               | What paper size to use (see below) |

| showRowColHeaders     | false         | Whether to show the row numbers and column letters |

| showGridLines         | false         | Whether to show grid lines |

| firstPageNumber       |               | Which number to use for the first page |

| horizontalCentered    | false         | Whether to center the sheet data horizontally |

| verticalCentered      | false         | Whether to center the sheet data vertically |



**Example Paper Sizes**



| Name                          | Value     |

| ----------------------------- | --------- |

| Letter                        | undefined |

| Legal                         |  5        |

| Executive                     |  7        |

| A3                            |  8        |

| A4                            |  9        |

| A5                            |  11       |

| B5 (JIS)                      |  13       |

| Envelope #10                  |  20       |

| Envelope DL                   |  27       |

| Envelope C5                   |  28       |

| Envelope B5                   |  34       |

| Envelope Monarch              |  37       |

| Double Japan Postcard Rotated |  82       |

| 16K 197x273 mm                |  119      |



## Headers and Footers[⬆](#contents)



Here's how to add headers and footers.

The added content is mainly text, such as time, introduction, file information, etc., and you can set the style of the text.

In addition, you can set different texts for the first page and even page.



Note: Images are not currently supported.



```javascript



// Create worksheets with headers and footers

var sheet = workbook.addWorksheet('sheet', {

  headerFooter:{firstHeader: "Hello Exceljs", firstFooter: "Hello World"}

});

// Create worksheets with headers and footers

var worksheetWriter = workbookWriter.addWorksheet('sheet', {

  headerFooter:{firstHeader: "Hello Exceljs", firstFooter: "Hello World"}

});

// Set footer (default centered), result: "Page 2 of 16"

worksheet.headerFooter.oddFooter = "Page &P of &N";



// Set the footer (default centered) to bold, resulting in: "Page 2 of 16"

worksheet.headerFooter.oddFooter = "Page &P of &N";



// Set the left footer to 18px and italicize. Result: "Page 2 of 16"

worksheet.headerFooter.oddFooter = "&LPage &P of &N";



// Set the middle header to gray Aril, the result: "52 exceljs"

worksheet.headerFooter.oddHeader = "&C&KCCCCCC&\"Aril\"52 exceljs";



// Set the left, center, and right text of the footer. Result: “Exceljs” in the footer left. “demo.xlsx” in the footer center. “Page 2” in the footer right

worksheet.headerFooter.oddFooter = "&Lexceljs&C&F&RPage &P";



// Add different header & footer for the first page

worksheet.headerFooter.differentFirst = true;

worksheet.headerFooter.firstHeader = "Hello Exceljs";

worksheet.headerFooter.firstFooter = "Hello World"

```



**Supported headerFooter settings**



| Name              | Default   | Description |

| ----------------- | --------- | ----------- |

| differentFirst    | false     | Set the value of differentFirst as true, which indicates that headers/footers for first page are different from the other pages |

| differentOddEven  | false     | Set the value of differentOddEven as true, which indicates that headers/footers for odd and even pages are different |

| oddHeader         | null      | Set header string for odd(default) pages, could format the string |

| oddFooter         | null      | Set footer string for odd(default) pages, could format the string |

| evenHeader        | null      | Set header string for even pages, could format the string |

| evenFooter        | null      | Set footer string for even pages, could format the string |

| firstHeader       | null      | Set header string for the first page, could format the string |

| firstFooter       | null      | Set footer string for the first page, could format the string |



**Script Commands**



| Commands     | Description |

| ------------ | ----------- |

| &L           | Set position to the left |

| &C           | Set position to the center |

| &R           | Set position to the right |

| &P           | The current page number |

| &N           | The total number of pages |

| &D           | The current date |

| &T           | The current time |

| &G           | A picture |

| &A           | The worksheet name |

| &F           | The file name |

| &B           | Make text bold |

| &I           | Italicize text |

| &U           | Underline text |

| &"font name" | font name, for example &"Aril" |

| &font size   | font size, for example 12 |

| &KHEXCode    | font color, for example &KCCCCCC |



## Worksheet Views[⬆](#contents)



Worksheets now support a list of views, that control how Excel presents the sheet:



* frozen - where a number of rows and columns to the top and left are frozen in place. Only the bottom right section will scroll

* split - where the view is split into 4 sections, each semi-independently scrollable.



Each view also supports various properties:



| Name              | Default   | Description |

| ----------------- | --------- | ----------- |

| state             | 'normal'  | Controls the view state - one of normal, frozen or split |

| rightToLeft       | false     | Sets the worksheet view's orientation to right-to-left |

| activeCell        | undefined | The currently selected cell |

| showRuler         | true      | Shows or hides the ruler in Page Layout |

| showRowColHeaders | true      | Shows or hides the row and column headers (e.g. A1, B1 at the top and 1,2,3 on the left |

| showGridLines     | true      | Shows or hides the gridlines (shown for cells where borders have not been defined) |

| zoomScale         | 100       | Percentage zoom to use for the view |

| zoomScaleNormal   | 100       | Normal zoom for the view |

| style             | undefined | Presentation style - one of pageBreakPreview or pageLayout. Note pageLayout is not compatible with frozen views |



### Frozen Views[⬆](#contents)



Frozen views support the following extra properties:



| Name              | Default   | Description |

| ----------------- | --------- | ----------- |

| xSplit            | 0         | How many columns to freeze. To freeze rows only, set this to 0 or undefined |

| ySplit            | 0         | How many rows to freeze. To freeze columns only, set this to 0 or undefined |

| topLeftCell       | special   | Which cell will be top-left in the bottom-right pane. Note: cannot be a frozen cell. Defaults to first unfrozen cell |



```javascript

worksheet.views = [

  {state: 'frozen', xSplit: 2, ySplit: 3, topLeftCell: 'G10', activeCell: 'A1'}

];

```



### Split Views[⬆](#contents)



Split views support the following extra properties:



| Name              | Default   | Description |

| ----------------- | --------- | ----------- |

| xSplit            | 0         | How many points from the left to place the splitter. To split vertically, set this to 0 or undefined |

| ySplit            | 0         | How many points from the top to place the splitter. To split horizontally, set this to 0 or undefined  |

| topLeftCell       | undefined | Which cell will be top-left in the bottom-right pane. |

| activePane        | undefined | Which pane will be active - one of topLeft, topRight, bottomLeft and bottomRight |



```javascript

worksheet.views = [

  {state: 'split', xSplit: 2000, ySplit: 3000, topLeftCell: 'G10', activeCell: 'A1'}

];

```



## Auto filters[⬆](#contents)



It is possible to apply an auto filter to your worksheet.



```javascript

worksheet.autoFilter = 'A1:C1';

```



While the range string is the standard form of the autoFilter, the worksheet will also support the

following values:



```javascript

// Set an auto filter from A1 to C1

worksheet.autoFilter = {

  from: 'A1',

  to: 'C1',

}



// Set an auto filter from the cell in row 3 and column 1

// to the cell in row 5 and column 12

worksheet.autoFilter = {

  from: {

    row: 3,

    column: 1

  },

  to: {

    row: 5,

    column: 12

  }

}



// Set an auto filter from D3 to the

// cell in row 7 and column 5

worksheet.autoFilter = {

  from: 'D3',

  to: {

    row: 7,

    column: 5

  }

}

```



## Columns[⬆](#contents)



```javascript

// Add column headers and define column keys and widths

// Note: these column structures are a workbook-building convenience only,

// apart from the column width, they will not be fully persisted.

worksheet.columns = [

  { header: 'Id', key: 'id', width: 10 },

  { header: 'Name', key: 'name', width: 32 },

  { header: 'D.O.B.', key: 'DOB', width: 10, outlineLevel: 1 }

];



// Access an individual columns by key, letter and 1-based column number

const idCol = worksheet.getColumn('id');

const nameCol = worksheet.getColumn('B');

const dobCol = worksheet.getColumn(3);



// set column properties



// Note: will overwrite cell value C1

dobCol.header = 'Date of Birth';



// Note: this will overwrite cell values C1:C2

dobCol.header = ['Date of Birth', 'A.K.A. D.O.B.'];



// from this point on, this column will be indexed by 'dob' and not 'DOB'

dobCol.key = 'dob';



dobCol.width = 15;



// Hide the column if you'd like

dobCol.hidden = true;



// set an outline level for columns

worksheet.getColumn(4).outlineLevel = 0;

worksheet.getColumn(5).outlineLevel = 1;



// columns support a readonly field to indicate the collapsed state based on outlineLevel

expect(worksheet.getColumn(4).collapsed).to.equal(false);

expect(worksheet.getColumn(5).collapsed).to.equal(true);



// iterate over all current cells in this column

dobCol.eachCell(function(cell, rowNumber) {

  // ...

});



// iterate over all current cells in this column including empty cells

dobCol.eachCell({ includeEmpty: true }, function(cell, rowNumber) {

  // ...

});



// add a column of new values

worksheet.getColumn(6).values = [1,2,3,4,5];



// add a sparse column of values

worksheet.getColumn(7).values = [,,2,3,,5,,7,,,,11];



// cut one or more columns (columns to the right are shifted left)

// If column properties have been defined, they will be cut or moved accordingly

// Known Issue: If a splice causes any merged cells to move, the results may be unpredictable

worksheet.spliceColumns(3,2);



// remove one column and insert two more.

// Note: columns 4 and above will be shifted right by 1 column.

// Also: If the worksheet has more rows than values in the column inserts,

//  the rows will still be shifted as if the values existed

const newCol3Values = [1,2,3,4,5];

const newCol4Values = ['one', 'two', 'three', 'four', 'five'];

worksheet.spliceColumns(3, 1, newCol3Values, newCol4Values);



```



## Rows[⬆](#contents)



```javascript

// Get a row object. If it doesn't already exist, a new empty one will be returned

const row = worksheet.getRow(5);



// Get multiple row objects. If it doesn't already exist, new empty ones will be returned

const rows = worksheet.getRows(5, 2); // start, length (>0, else undefined is returned)



// Get the last editable row in a worksheet (or undefined if there are none)

const row = worksheet.lastRow;



// Set a specific row height

row.height = 42.5;



// make row hidden

row.hidden = true;



// set an outline level for rows

worksheet.getRow(4).outlineLevel = 0;

worksheet.getRow(5).outlineLevel = 1;



// rows support a readonly field to indicate the collapsed state based on outlineLevel

expect(worksheet.getRow(4).collapsed).to.equal(false);

expect(worksheet.getRow(5).collapsed).to.equal(true);



row.getCell(1).value = 5; // A5's value set to 5

row.getCell('name').value = 'Zeb'; // B5's value set to 'Zeb' - assuming column 2 is still keyed by name

row.getCell('C').value = new Date(); // C5's value set to now



// Get a row as a sparse array

// Note: interface change: worksheet.getRow(4) ==> worksheet.getRow(4).values

row = worksheet.getRow(4).values;

expect(row[5]).toEqual('Kyle');



// assign row values by contiguous array (where array element 0 has a value)

row.values = [1,2,3];

expect(row.getCell(1).value).toEqual(1);

expect(row.getCell(2).value).toEqual(2);

expect(row.getCell(3).value).toEqual(3);



// assign row values by sparse array  (where array element 0 is undefined)

const values = []

values[5] = 7;

values[10] = 'Hello, World!';

row.values = values;

expect(row.getCell(1).value).toBeNull();

expect(row.getCell(5).value).toEqual(7);

expect(row.getCell(10).value).toEqual('Hello, World!');



// assign row values by object, using column keys

row.values = {

  id: 13,

  name: 'Thing 1',

  dob: new Date()

};



// Insert a page break below the row

row.addPageBreak();



// Iterate over all rows that have values in a worksheet

worksheet.eachRow(function(row, rowNumber) {

  console.log('Row ' + rowNumber + ' = ' + JSON.stringify(row.values));

});



// Iterate over all rows (including empty rows) in a worksheet

worksheet.eachRow({ includeEmpty: true }, function(row, rowNumber) {

  console.log('Row ' + rowNumber + ' = ' + JSON.stringify(row.values));

});



// Iterate over all non-null cells in a row

row.eachCell(function(cell, colNumber) {

  console.log('Cell ' + colNumber + ' = ' + cell.value);

});



// Iterate over all cells in a row (including empty cells)

row.eachCell({ includeEmpty: true }, function(cell, colNumber) {

  console.log('Cell ' + colNumber + ' = ' + cell.value);

});



// Commit a completed row to stream

row.commit();



// row metrics

const rowSize = row.cellCount;

const numValues = row.actualCellCount;

```



## Add Rows[⬆](#contents)



```javascript

// Add a couple of Rows by key-value, after the last current row, using the column keys

worksheet.addRow({id: 1, name: 'John Doe', dob: new Date(1970,1,1)});

worksheet.addRow({id: 2, name: 'Jane Doe', dob: new Date(1965,1,7)});



// Add a row by contiguous Array (assign to columns A, B & C)

worksheet.addRow([3, 'Sam', new Date()]);



// Add a row by sparse Array (assign to columns A, E & I)

const rowValues = [];

rowValues[1] = 4;

rowValues[5] = 'Kyle';

rowValues[9] = new Date();

worksheet.addRow(rowValues);



// Add a row with inherited style

// This new row will have same style as last row

// And return as row object

const newRow = worksheet.addRow(rowValues, 'i');



// Add an array of rows

const rows = [

  [5,'Bob',new Date()], // row by array

  {id:6, name: 'Barbara', dob: new Date()}

];

// add new rows and return them as array of row objects

const newRows = worksheet.addRows(rows);



// Add an array of rows with inherited style

// These new rows will have same styles as last row

// and return them as array of row objects

const newRowsStyled = worksheet.addRows(rows, 'i');

```

| Parameter | Description | Default Value |

| -------------- | ----------------- | -------- |

| value/s    | The new row/s values |  |

| style            | 'i' for inherit from row above, 'i+' to include empty cells, 'n' for none | *'n'* |



## Handling Individual Cells[⬆](#contents)



```javascript

const cell = worksheet.getCell('C3');



// Modify/Add individual cell

cell.value = new Date(1968, 5, 1);



// query a cell's type

expect(cell.type).toEqual(Excel.ValueType.Date);



// use string value of cell

myInput.value = cell.text;



// use html-safe string for rendering...

const html = '
' + cell.html + '
';



```



## Merged Cells[⬆](#contents)



```javascript

// merge a range of cells

worksheet.mergeCells('A4:B5');



// ... merged cells are linked

worksheet.getCell('B5').value = 'Hello, World!';

expect(worksheet.getCell('B5').value).toBe(worksheet.getCell('A4').value);

expect(worksheet.getCell('B5').master).toBe(worksheet.getCell('A4'));



// ... merged cells share the same style object

expect(worksheet.getCell('B5').style).toBe(worksheet.getCell('A4').style);

worksheet.getCell('B5').style.font = myFonts.arial;

expect(worksheet.getCell('A4').style.font).toBe(myFonts.arial);



// unmerging the cells breaks the style links

worksheet.unMergeCells('A4');

expect(worksheet.getCell('B5').style).not.toBe(worksheet.getCell('A4').style);

expect(worksheet.getCell('B5').style.font).not.toBe(myFonts.arial);



// merge by top-left, bottom-right

worksheet.mergeCells('K10', 'M12');



// merge by start row, start column, end row, end column (equivalent to K10:M12)

worksheet.mergeCells(10,11,12,13);

```



## Insert Rows[⬆](#contents)



```javascript

insertRow(pos, value, style = 'n')

insertRows(pos, values, style = 'n')



// Insert a couple of Rows by key-value, shifting down rows every time

worksheet.insertRow(1, {id: 1, name: 'John Doe', dob: new Date(1970,1,1)});

worksheet.insertRow(1, {id: 2, name: 'Jane Doe', dob: new Date(1965,1,7)});



// Insert a row by contiguous Array (assign to columns A, B & C)

worksheet.insertRow(1, [3, 'Sam', new Date()]);



// Insert a row by sparse Array (assign to columns A, E & I)

var rowValues = [];

rowValues[1] = 4;

rowValues[5] = 'Kyle';

rowValues[9] = new Date();

// insert new row and return as row object

const insertedRow = worksheet.insertRow(1, rowValues);



// Insert a row, with inherited style

// This new row will have same style as row on top of it

// And return as row object

const insertedRowInherited = worksheet.insertRow(1, rowValues, 'i');



// Insert a row, keeping original style

// This new row will have same style as it was previously

// And return as row object

const insertedRowOriginal = worksheet.insertRow(1, rowValues, 'o');



// Insert an array of rows, in position 1, shifting down current position 1 and later rows by 2 rows

var rows = [

  [5,'Bob',new Date()], // row by array

  {id:6, name: 'Barbara', dob: new Date()}

];

// insert new rows and return them as array of row objects

const insertedRows = worksheet.insertRows(1, rows);



// Insert an array of rows, with inherited style

// These new rows will have same style as row on top of it

// And return them as array of row objects

const insertedRowsInherited = worksheet.insertRows(1, rows, 'i');



// Insert an array of rows, keeping original style

// These new rows will have same style as it was previously in 'pos' position

const insertedRowsOriginal = worksheet.insertRows(1, rows, 'o');



```

| Parameter | Description | Default Value |

| -------------- | ----------------- | -------- |

| pos          | Row number where you want to insert, pushing down all rows from there |  |

| value/s    | The new row/s values |  |

| style            | 'i' for inherit from row above, , 'i+' to include empty cells, 'o' for original style, 'o+' to include empty cells, 'n' for none | *'n'* |



## Splice[⬆](#contents)



```javascript

// Cut one or more rows (rows below are shifted up)

// Known Issue: If a splice causes any merged cells to move, the results may be unpredictable

worksheet.spliceRows(4, 3);



// remove one row and insert two more.

// Note: rows 4 and below will be shifted down by 1 row.

const newRow3Values = [1, 2, 3, 4, 5];

const newRow4Values = ['one', 'two', 'three', 'four', 'five'];

worksheet.spliceRows(3, 1, newRow3Values, newRow4Values);



// Cut one or more cells (cells to the right are shifted left)

// Note: this operation will not affect other rows

row.splice(3, 2);



// remove one cell and insert two more (cells to the right of the cut cell will be shifted right)

row.splice(4, 1, 'new value 1', 'new value 2');

```

| Parameter | Description | Default Value |

| -------------- | ----------------- | -------- |

| start    | Starting point to splice from |  |

| count    | Number of rows/cells to remove |  |

| ...inserts            | New row/cell values to insert |  |



## Duplicate a Row[⬆](#contents)



```javascript

duplicateRow(start, amount = 1, insert = true)



const wb = new ExcelJS.Workbook();

const ws = wb.addWorksheet('duplicateTest');

ws.getCell('A1').value = 'One';

ws.getCell('A2').value = 'Two';

ws.getCell('A3').value = 'Three';

ws.getCell('A4').value = 'Four';



// This line will duplicate the row 'One' twice but it will replace rows 'Two' and 'Three'

// if third param was true so it would insert 2 new rows with the values and styles of row 'One'

ws.duplicateRow(1,2,false);

```



| Parameter | Description | Default Value |

| -------------- | ----------------- | -------- |

| start          | Row number you want to duplicate (first in excel is 1) |  |

| amount    | The times you want to duplicate the row | 1 |

| insert            | *true* if you want to insert new rows for the duplicates, or *false* if you want to replace them | *true* |



## Defined Names[⬆](#contents)



Individual cells (or multiple groups of cells) can have names assigned to them.

 The names can be used in formulas and data validation (and probably more).



```javascript

// assign (or get) a name for a cell (will overwrite any other names that cell had)

worksheet.getCell('A1').name = 'PI';

expect(worksheet.getCell('A1').name).to.equal('PI');



// assign (or get) an array of names for a cell (cells can have more than one name)

worksheet.getCell('A1').names = ['thing1', 'thing2'];

expect(worksheet.getCell('A1').names).to.have.members(['thing1', 'thing2']);



// remove a name from a cell

worksheet.getCell('A1').removeName('thing1');

expect(worksheet.getCell('A1').names).to.have.members(['thing2']);

```



## Data Validations[⬆](#contents)



Cells can define what values are valid or not and provide prompting to the user to help guide them.



Validation types can be one of the following:



| Type       | Description |

| ---------- | ----------- |

| list       | Define a discrete set of valid values. Excel will offer these in a dropdown for easy entry |

| whole      | The value must be a whole number |

| decimal    | The value must be a decimal number |

| textLength | The value may be text but the length is controlled |

| custom     | A custom formula controls the valid values |



For types other than list or custom, the following operators affect the validation:



| Operator              | Description |

| --------------------  | ----------- |

| between               | Values must lie between formula results |

| notBetween            | Values must not lie between formula results |

| equal                 | Value must equal formula result |

| notEqual              | Value must not equal formula result |

| greaterThan           | Value must be greater than formula result |

| lessThan              | Value must be less than formula result |

| greaterThanOrEqual    | Value must be greater than or equal to formula result |

| lessThanOrEqual       | Value must be less than or equal to formula result |



```javascript

// Specify list of valid values (One, Two, Three, Four).

// Excel will provide a dropdown with these values.

worksheet.getCell('A1').dataValidation = {

  type: 'list',

  allowBlank: true,

  formulae: ['"One,Two,Three,Four"']

};



// Specify list of valid values from a range.

// Excel will provide a dropdown with these values.

worksheet.getCell('A1').dataValidation = {

  type: 'list',

  allowBlank: true,

  formulae: ['$D$5:$F$5']

};



// Specify Cell must be a whole number that is not 5.

// Show the user an appropriate error message if they get it wrong

worksheet.getCell('A1').dataValidation = {

  type: 'whole',

  operator: 'notEqual',

  showErrorMessage: true,

  formulae: [5],

  errorStyle: 'error',

  errorTitle: 'Five',

  error: 'The value must not be Five'

};



// Specify Cell must be a decimal number between 1.5 and 7.

// Add 'tooltip' to help guid the user

worksheet.getCell('A1').dataValidation = {

  type: 'decimal',

  operator: 'between',

  allowBlank: true,

  showInputMessage: true,

  formulae: [1.5, 7],

  promptTitle: 'Decimal',

  prompt: 'The value must between 1.5 and 7'

};



// Specify Cell must be have a text length less than 15

worksheet.getCell('A1').dataValidation = {

  type: 'textLength',

  operator: 'lessThan',

  showErrorMessage: true,

  allowBlank: true,

  formulae: [15]

};



// Specify Cell must be have be a date before 1st Jan 2016

worksheet.getCell('A1').dataValidation = {

  type: 'date',

  operator: 'lessThan',

  showErrorMessage: true,

  allowBlank: true,

  formulae: [new Date(2016,0,1)]

};

```



## Cell Comments[⬆](#contents)



Add old style comment to a cell



```javascript

// plain text note

worksheet.getCell('A1').note = 'Hello, ExcelJS!';



// colourful formatted note

ws.getCell('B1').note = {

  texts: [

    {'font': {'size': 12, 'color': {'theme': 0}, 'name': 'Calibri', 'family': 2, 'scheme': 'minor'}, 'text': 'This is '},

    {'font': {'italic': true, 'size': 12, 'color': {'theme': 0}, 'name': 'Calibri', 'scheme': 'minor'}, 'text': 'a'},

    {'font': {'size': 12, 'color': {'theme': 1}, 'name': 'Calibri', 'family': 2, 'scheme': 'minor'}, 'text': ' '},

    {'font': {'size': 12, 'color': {'argb': 'FFFF6600'}, 'name': 'Calibri', 'scheme': 'minor'}, 'text': 'colorful'},

    {'font': {'size': 12, 'color': {'theme': 1}, 'name': 'Calibri', 'family': 2, 'scheme': 'minor'}, 'text': ' text '},

    {'font': {'size': 12, 'color': {'argb': 'FFCCFFCC'}, 'name': 'Calibri', 'scheme': 'minor'}, 'text': 'with'},

    {'font': {'size': 12, 'color': {'theme': 1}, 'name': 'Calibri', 'family': 2, 'scheme': 'minor'}, 'text': ' in-cell '},

    {'font': {'bold': true, 'size': 12, 'color': {'theme': 1}, 'name': 'Calibri', 'family': 2, 'scheme': 'minor'}, 'text': 'format'},

  ],

  margins: {

    insetmode: 'custom',

    inset: [0.25, 0.25, 0.35, 0.35]

  },

  protection: {

    locked: True,

    lockText: False

  },

  editAs: 'twoCells',

};

```



### Cell Comments Properties[⬆](#contents)



The following table defines the properties supported by cell comments.



| Field     | Required | Default Value | Description |

| --------  | -------- | ------------- | ----------- |

| texts     | Y        |               | The text of the comment |

| margins | N        | {}  | Determines the value of margins for automatic or custom cell comments

| protection   | N        | {} | Specifying the lock status of objects and object text using protection attributes |

| editAs   | N        | 'absolute' | Use the 'editAs' attribute to specify how the annotation is anchored to the cell  |



### Cell Comments Margins



Determine the page margin setting mode of the cell annotation, automatic or custom mode.



```javascript

ws.getCell('B1').note.margins = {

  insetmode: 'custom',

  inset: [0.25, 0.25, 0.35, 0.35]

}

```



### Supported Margins Properties[⬆](#contents)



| Property     | Required | Default Value | Description |

| --------  | -------- | ------------- | ----------- |

| insetmode     | N        |    'auto'           | Determines whether comment margins are set automatically and the value is 'auto' or 'custom' |

| inset | N        | [0.13, 0.13, 0.25, 0.25]  | Whitespace on the borders of the comment. Units are centimeter. Direction is left, top, right, bottom |



Note: This  ```inset``` setting takes effect only when the value of ```insetmode``` is 'custom'.



### Cell Comments Protection



Specifying the lock status of objects and object text using protection attributes.



```javascript

ws.getCell('B1').note.protection = {

  locked: 'False',

  lockText: 'False',

};

```



### Supported Protection Properties[⬆](#contents)



| Property     | Required | Default Value | Description |

| --------  | -------- | ------------- | ----------- |

| locked     | N        |    'True'           | This element specifies that the object is locked when the sheet is protected |

| lockText | N        | 'True'  | This element specifies that the text of the object is locked |



Note: Locked objects are valid only when the worksheet is protected.



### Cell Comments EditAs[⬆](#contents)



The cell comments can also have the property 'editAs' which will control how the comments is anchored to the cell(s).

It can have one of the following values:



```javascript

ws.getCell('B1').note.editAs = 'twoCells';

```



| Value     | Description |

| --------- | ----------- |

| twoCells | It specifies that the size and position of the note varies with cells |

| oneCells   | It specifies that the size of the note is fixed and the position changes with the cell |

| absolute  | This is the default. Comments will not be moved or sized with cells |



## Tables[⬆](#contents)



Tables allow for in-sheet manipulation of tabular data.



To add a table to a worksheet, define a table model and call addTable:



```javascript

// add a table to a sheet

ws.addTable({

  name: 'MyTable',

  ref: 'A1',

  headerRow: true,

  totalsRow: true,

  style: {

    theme: 'TableStyleDark3',

    showRowStripes: true,

  },

  columns: [

    {name: 'Date', totalsRowLabel: 'Totals:', filterButton: true},

    {name: 'Amount', totalsRowFunction: 'sum', filterButton: false},

  ],

  rows: [

    [new Date('2019-07-20'), 70.10],

    [new Date('2019-07-21'), 70.60],

    [new Date('2019-07-22'), 70.10],

  ],

});

```



Note: Adding a table to a worksheet will modify the sheet by placing

headers and row data to the sheet.

Any data on the sheet covered by the resulting table (including headers and

totals) will be overwritten.



### Table Properties[⬆](#contents)



The following table defines the properties supported by tables.



| Table Property | Description       | Required | Default Value |

| -------------- | ----------------- | -------- | ------------- |

| name           | The name of the table | Y |    |

| displayName    | The display name of the table | N | name |

| ref            | Top left cell of the table | Y |   |

| headerRow      | Show headers at top of table | N | true |

| totalsRow      | Show totals at bottom of table | N | false |

| style          | Extra style properties | N | {} |

| columns        | Column definitions | Y |   |

| rows           | Rows of data | Y |   |



### Table Style Properties[⬆](#contents)



The following table defines the properties supported within the table

style property.



| Style Property     | Description       | Required | Default Value |

| ------------------ | ----------------- | -------- | ------------- |

| theme              | The colour theme of the table | N |  'TableStyleMedium2'  |

| showFirstColumn    | Highlight the first column (bold) | N |  false  |

| showLastColumn     | Highlight the last column (bold) | N |  false  |

| showRowStripes     | Alternate rows shown with background colour | N |  false  |

| showColumnStripes  | Alternate rows shown with background colour | N |  false  |



### Table Column Properties[⬆](#contents)



The following table defines the properties supported within each table

column.



| Column Property    | Description       | Required | Default Value |

| ------------------ | ----------------- | -------- | ------------- |

| name               | The name of the column, also used in the header | Y |    |

| filterButton       | Switches the filter control in the header | N |  false  |

| totalsRowLabel     | Label to describe the totals row (first column) | N | 'Total' |

| totalsRowFunction  | Name of the totals function | N | 'none' |

| totalsRowFormula   | Optional formula for custom functions | N |   |



### Totals Functions[⬆](#contents)



The following table list the valid values for the totalsRowFunction property

defined by columns. If any value other than 'custom' is used, it is not

necessary to include the associated formula as this will be inserted

by the table.



| Totals Functions   | Description       |

| ------------------ | ----------------- |

| none               | No totals function for this column |

| average            | Compute average for the column |

| countNums          | Count the entries that are numbers |

| count              | Count of entries |

| max                | The maximum value in this column |

| min                | The minimum value in this column |

| stdDev             | The standard deviation for this column |

| var                | The variance for this column |

| sum                | The sum of entries for this column |

| custom             | A custom formula. Requires an associated totalsRowFormula value. |



### Table Style Themes[⬆](#contents)



Valid theme names follow the following pattern:



* "TableStyle[Shade][Number]"



Shades, Numbers can be one of:



* Light, 1-21

* Medium, 1-28

* Dark, 1-11



For no theme, use the value null.



Note: custom table themes are not supported by exceljs yet.



### Modifying Tables[⬆](#contents)



Tables support a set of manipulation functions that allow data to be

added or removed and some properties to be changed. Since many of these

operations may have on-sheet effects, the changes must be committed

once complete.



All index values in the table are zero based, so the first row number

and first column number is 0.



**Adding or Removing Headers and Totals**



```javascript

const table = ws.getTable('MyTable');



// turn header row on

table.headerRow = true;



// turn totals row off

table.totalsRow = false;



// commit the table changes into the sheet

table.commit();

```



**Relocating a Table**



```javascript

const table = ws.getTable('MyTable');



// table top-left move to D4

table.ref = 'D4';



// commit the table changes into the sheet

table.commit();

```



**Adding and Removing Rows**



```javascript

const table = ws.getTable('MyTable');



// remove first two rows

table.removeRows(0, 2);



// insert new rows at index 5

table.addRow([new Date('2019-08-05'), 5, 'Mid'], 5);



// append new row to bottom of table

table.addRow([new Date('2019-08-10'), 10, 'End']);



// commit the table changes into the sheet

table.commit();

```



**Adding and Removing Columns**



```javascript

const table = ws.getTable('MyTable');



// remove second column

table.removeColumns(1, 1);



// insert new column (with data) at index 1

table.addColumn(

  {name: 'Letter', totalsRowFunction: 'custom', totalsRowFormula: 'ROW()', totalsRowResult: 6, filterButton: true},

  ['a', 'b', 'c', 'd'],

  2

);



// commit the table changes into the sheet

table.commit();

```



**Change Column Properties**



```javascript

const table = ws.getTable('MyTable');



// Get Column Wrapper for second column

const column = table.getColumn(1);



// set some properties

column.name = 'Code';

column.filterButton = true;

column.style = {font:{bold: true, name: 'Comic Sans MS'}};

column.totalsRowLabel = 'Totals';

column.totalsRowFunction = 'custom';

column.totalsRowFormula = 'ROW()';

column.totalsRowResult = 10;



// commit the table changes into the sheet

table.commit();

```



## Styles[⬆](#contents)



Cells, Rows and Columns each support a rich set of styles and formats that affect how the cells are displayed.



Styles are set by assigning the following properties:



* numFmt

* font

* alignment

* border

* fill



```javascript

// assign a style to a cell

ws.getCell('A1').numFmt = '0.00%';



// Apply styles to worksheet columns

ws.columns = [

  { header: 'Id', key: 'id', width: 10 },

  { header: 'Name', key: 'name', width: 32, style: { font: { name: 'Arial Black' } } },

  { header: 'D.O.B.', key: 'DOB', width: 10, style: { numFmt: 'dd/mm/yyyy' } }

];



// Set Column 3 to Currency Format

ws.getColumn(3).numFmt = '"£"#,##0.00;[Red]\-"£"#,##0.00';



// Set Row 2 to Comic Sans.

ws.getRow(2).font = { name: 'Comic Sans MS', family: 4, size: 16, underline: 'double', bold: true };

```



When a style is applied to a row or column, it will be applied to all currently existing cells in that row or column.

 Also, any new cell that is created will inherit its initial styles from the row and column it belongs to.



If a cell's row and column both define a specific style (e.g. font), the cell will use the row style over the column style.

 However if the row and column define different styles (e.g. column.numFmt and row.font), the cell will inherit the font from the row and the numFmt from the column.



Caveat: All the above properties (with the exception of numFmt, which is a string), are JS object structures.

 If the same style object is assigned to more than one spreadsheet entity, then each entity will share the same style object.

 If the style object is later modified before the spreadsheet is serialized, then all entities referencing that style object will be modified too.

 This behaviour is intended to prioritize performance by reducing the number of JS objects created.

 If you want the style objects to be independent, you will need to clone them before assigning them.

 Also, by default, when a document is read from file (or stream) if spreadsheet entities share similar styles, then they will reference the same style object too.



### Number Formats[⬆](#contents)



```javascript

// display value as '1 3/5'

ws.getCell('A1').value = 1.6;

ws.getCell('A1').numFmt = '# ?/?';



// display value as '1.60%'

ws.getCell('B1').value = 0.016;

ws.getCell('B1').numFmt = '0.00%';

```



### Fonts[⬆](#contents)



```javascript



// for the wannabe graphic designers out there

ws.getCell('A1').font = {

  name: 'Comic Sans MS',

  family: 4,

  size: 16,

  underline: true,

  bold: true

};



// for the graduate graphic designers...

ws.getCell('A2').font = {

  name: 'Arial Black',

  color: { argb: 'FF00FF00' },

  family: 2,

  size: 14,

  italic: true

};



// for the vertical align

ws.getCell('A3').font = {

  vertAlign: 'superscript'

};



// note: the cell will store a reference to the font object assigned.

// If the font object is changed afterwards, the cell font will change also...

const font = { name: 'Arial', size: 12 };

ws.getCell('A3').font = font;

font.size = 20; // Cell A3 now has font size 20!



// Cells that share similar fonts may reference the same font object after

// the workbook is read from file or stream

```



| Font Property | Description       | Example Value(s) |

| ------------- | ----------------- | ---------------- |

| name          | Font name. | 'Arial', 'Calibri', etc. |

| family        | Font family for fallback. An integer value. | 1 - Serif, 2 - Sans Serif, 3 - Mono, Others - unknown |

| scheme        | Font scheme. | 'minor', 'major', 'none' |

| charset       | Font charset. An integer value. | 1, 2, etc. |

| size          | Font size. An integer value. | 9, 10, 12, 16, etc. |

| color         | Colour description, an object containing an ARGB value. | { argb: 'FFFF0000'} |

| bold          | Font **weight** | true, false |

| italic        | Font *slope* | true, false |

| underline     | Font underline style | true, false, 'none', 'single', 'double', 'singleAccounting', 'doubleAccounting' |

| strike        | Font strikethrough | true, false |

| outline       | Font outline | true, false |

| vertAlign     | Vertical align | 'superscript', 'subscript'



### Alignment[⬆](#contents)



```javascript

// set cell alignment to top-left, middle-center, bottom-right

ws.getCell('A1').alignment = { vertical: 'top', horizontal: 'left' };

ws.getCell('B1').alignment = { vertical: 'middle', horizontal: 'center' };

ws.getCell('C1').alignment = { vertical: 'bottom', horizontal: 'right' };



// set cell to wrap-text

ws.getCell('D1').alignment = { wrapText: true };



// set cell indent to 1

ws.getCell('E1').alignment = { indent: 1 };



// set cell text rotation to 30deg upwards, 45deg downwards and vertical text

ws.getCell('F1').alignment = { textRotation: 30 };

ws.getCell('G1').alignment = { textRotation: -45 };

ws.getCell('H1').alignment = { textRotation: 'vertical' };

```



**Valid Alignment Property Values**



| horizontal       | vertical    | wrapText | shrinkToFit | indent  | readingOrder | textRotation |

| ---------------- | ----------- | -------- | ----------- | ------- | ------------ | ------------ |

| left             | top         | true     | true        | integer | rtl          | 0 to 90      |

| center           | middle      | false    | false       |         | ltr          | -1 to -90    |

| right            | bottom      |          |             |         |              | vertical     |

| fill             | distributed |          |             |         |              |              |

| justify          | justify     |          |             |         |              |              |

| centerContinuous |             |          |             |         |              |              |

| distributed      |             |          |             |         |              |              |



### Borders[⬆](#contents)



```javascript

// set single thin border around A1

ws.getCell('A1').border = {

  top: {style:'thin'},

  left: {style:'thin'},

  bottom: {style:'thin'},

  right: {style:'thin'}

};



// set double thin green border around A3

ws.getCell('A3').border = {

  top: {style:'double', color: {argb:'FF00FF00'}},

  left: {style:'double', color: {argb:'FF00FF00'}},

  bottom: {style:'double', color: {argb:'FF00FF00'}},

  right: {style:'double', color: {argb:'FF00FF00'}}

};



// set thick red cross in A5

ws.getCell('A5').border = {

  diagonal: {up: true, down: true, style:'thick', color: {argb:'FFFF0000'}}

};

```



**Valid Border Styles**



* thin

* dotted

* dashDot

* hair

* dashDotDot

* slantDashDot

* mediumDashed

* mediumDashDotDot

* mediumDashDot

* medium

* double

* thick



### Fills[⬆](#contents)



```javascript

// fill A1 with red darkVertical stripes

ws.getCell('A1').fill = {

  type: 'pattern',

  pattern:'darkVertical',

  fgColor:{argb:'FFFF0000'}

};



// fill A2 with yellow dark trellis and blue behind

ws.getCell('A2').fill = {

  type: 'pattern',

  pattern:'darkTrellis',

  fgColor:{argb:'FFFFFF00'},

  bgColor:{argb:'FF0000FF'}

};



// fill A3 with solid coral

ws.getCell('A3').fill = {

  type: 'pattern',

  pattern:'solid',

  fgColor:{argb:'F08080'},

};



// fill A4 with blue-white-blue gradient from left to right

ws.getCell('A4').fill = {

  type: 'gradient',

  gradient: 'angle',

  degree: 0,

  stops: [

    {position:0, color:{argb:'FF0000FF'}},

    {position:0.5, color:{argb:'FFFFFFFF'}},

    {position:1, color:{argb:'FF0000FF'}}

  ]

};



// fill A5 with red-green gradient from center

ws.getCell('A5').fill = {

  type: 'gradient',

  gradient: 'path',

  center:{left:0.5,top:0.5},

  stops: [

    {position:0, color:{argb:'FFFF0000'}},

    {position:1, color:{argb:'FF00FF00'}}

  ]

};

```



#### Pattern Fills[⬆](#contents)



| Property | Required | Description |

| -------- | -------- | ----------- |

| type     | Y        | Value: 'pattern'
Specifies this fill uses patterns |

| pattern  | Y        | Specifies type of pattern (see Valid Pattern Types below) |

| fgColor  | N        | Specifies the pattern foreground color. Default is black. |

| bgColor  | N        | Specifies the pattern background color. Default is white. |



Note: If you want to fill a cell using the `solid` pattern, then you don't need to specify `bgColor`.

See example above for cell `A3` with a `solid` pattern and a coral `fgColor`.



**Valid Pattern Types**



* none

* solid

* darkGray

* mediumGray

* lightGray

* gray125

* gray0625

* darkHorizontal

* darkVertical

* darkDown

* darkUp

* darkGrid

* darkTrellis

* lightHorizontal

* lightVertical

* lightDown

* lightUp

* lightGrid

* lightTrellis



#### Gradient Fills[⬆](#contents)



| Property | Required | Description |

| -------- | -------- | ----------- |

| type     | Y        | Value: 'gradient'
Specifies this fill uses gradients |

| gradient | Y        | Specifies gradient type. One of ['angle', 'path'] |

| degree   | angle    | For 'angle' gradient, specifies the direction of the gradient. 0 is from the left to the right. Values from 1 - 359 rotates the direction clockwise |

| center   | path     | For 'path' gradient. Specifies the relative coordinates for the start of the path. 'left' and 'top' values range from 0 to 1 |

| stops    | Y        | Specifies the gradient colour sequence. Is an array of objects containing position and color starting with position 0 and ending with position 1. Intermediary positions may be used to specify other colours on the path. |



**Caveats**



Using the interface above it may be possible to create gradient fill effects not possible using the XLSX editor program.

For example, Excel only supports angle gradients of 0, 45, 90 and 135.

Similarly the sequence of stops may also be limited by the UI with positions [0,1] or [0,0.5,1] as the only options.

Take care with this fill to be sure it is supported by the target XLSX viewers.



### Rich Text[⬆](#contents)



Individual cells now support rich text or in-cell formatting.

 Rich text values can control the font properties of any number of sub-strings within the text value.

 See Fonts for a complete list of details on what font properties are supported.



```javascript



ws.getCell('A1').value = {

  'richText': [

    {'font': {'size': 12,'color': {'theme': 0},'name': 'Calibri','family': 2,'scheme': 'minor'},'text': 'This is '},

    {'font': {'italic': true,'size': 12,'color': {'theme': 0},'name': 'Calibri','scheme': 'minor'},'text': 'a'},

    {'font': {'size': 12,'color': {'theme': 1},'name': 'Calibri','family': 2,'scheme': 'minor'},'text': ' '},

    {'font': {'size': 12,'color': {'argb': 'FFFF6600'},'name': 'Calibri','scheme': 'minor'},'text': 'colorful'},

    {'font': {'size': 12,'color': {'theme': 1},'name': 'Calibri','family': 2,'scheme': 'minor'},'text': ' text '},

    {'font': {'size': 12,'color': {'argb': 'FFCCFFCC'},'name': 'Calibri','scheme': 'minor'},'text': 'with'},

    {'font': {'size': 12,'color': {'theme': 1},'name': 'Calibri','family': 2,'scheme': 'minor'},'text': ' in-cell '},

    {'font': {'bold': true,'size': 12,'color': {'theme': 1},'name': 'Calibri','family': 2,'scheme': 'minor'},'text': 'format'}

  ]

};



expect(ws.getCell('A1').text).to.equal('This is a colorful text with in-cell format');

expect(ws.getCell('A1').type).to.equal(Excel.ValueType.RichText);



```



### Cell Protection[⬆](#contents)



Cell level protection can be modified using the protection property.



```javascript

ws.getCell('A1').protection = {

  locked: false,

  hidden: true,

};

```



**Supported Protection Properties**



| Property | Default | Description |

| -------- | ------- | ----------- |

| locked   | true    | Specifies whether a cell will be locked if the sheet is protected. |

| hidden   | false   | Specifies whether a cell's formula will be visible if the sheet is protected. |



## Conditional Formatting[⬆](#contents)



Conditional formatting allows a sheet to show specific styles, icons, etc

depending on cell values or any arbitrary formula.



Conditional formatting rules are added at the sheet level and will typically

cover a range of cells.



Multiple rules can be applied to a given cell range and each rule will apply

its own style.



If multiple rules affect a given cell, the rule priority value will determine

which rule wins out if competing styles collide.

The rule with the lower priority value wins.

If priority values are not specified for a given rule, ExcelJS will assign them

in ascending order.



Note: at present, only a subset of conditional formatting rules are supported.

Specifically, only the formatting rules that do not require XML rendering

inside an <extLst> element. This means that datasets and three specific

icon sets (3Triangles, 3Stars, 5Boxes) are not supported.



```javascript

// add a checkerboard pattern to A1:E7 based on row + col being even or odd

worksheet.addConditionalFormatting({

  ref: 'A1:E7',

  rules: [

    {

      type: 'expression',

      formulae: ['MOD(ROW()+COLUMN(),2)=0'],

      style: {fill: {type: 'pattern', pattern: 'solid', bgColor: {argb: 'FF00FF00'}}},

    }

  ]

})

```



**Supported Conditional Formatting Rule Types**



| Type         | Description |

| ------------ | ----------- |

| expression   | Any custom function may be used to activate the rule. |

| cellIs       | Compares cell value with supplied formula using specified operator |

| top10        | Applies formatting to cells with values in top (or bottom) ranges |

| aboveAverage | Applies formatting to cells with values above (or below) average |

| colorScale   | Applies a coloured background to cells based on where their values lie in the range |

| iconSet      | Adds one of a range of icons to cells based on value |

| containsText | Applies formatting based on whether cell a specific text |

| timePeriod   | Applies formatting based on whether cell datetime value lies within a specified range |



### Expression[⬆](#contents)



| Field    | Optional | Default | Description |

| -------- | -------- | ------- | ----------- |

| type     |          |         | 'expression' |

| priority | Y        | <auto>  | determines priority ordering of styles |

| formulae |          |         | array of 1 formula string that returns a true/false value. To reference the cell value, use the top-left cell address |

| style    |          |         | style structure to apply if the formula returns true |



### Cell Is[⬆](#contents)



| Field    | Optional | Default | Description |

| -------- | -------- | ------- | ----------- |

| type     |          |         | 'cellIs' |

| priority | Y        | <auto>  | determines priority ordering of styles |

| operator |          |         | how to compare cell value with formula result |

| formulae |          |         | array of 1 formula string that returns the value to compare against each cell |

| style    |          |         | style structure to apply if the comparison returns true |



**Cell Is Operators**



| Operator    | Description |

| ----------- | ----------- |

| equal       | Apply format if cell value equals formula value |

| greaterThan | Apply format if cell value is greater than formula value |

| lessThan    | Apply format if cell value is less than formula value |

| between     | Apply format if cell value is between two formula values (inclusive) |



### Top 10[⬆](#contents)



| Field    | Optional | Default | Description |

| -------- | -------- | ------- | ----------- |

| type     |          |         | 'top10' |

| priority | Y        | <auto>  | determines priority ordering of styles |

| rank     | Y        | 10      | specifies how many top (or bottom) values are included in the formatting |

| percent  | Y        | false   | if true, the rank field is a percentage, not an absolute |

| bottom   | Y        | false   | if true, the bottom values are included instead of the top |

| style    |          |         | style structure to apply if the comparison returns true |



### Above Average[⬆](#contents)



| Field         | Optional | Default | Description |

| ------------- | -------- | ------- | ----------- |

| type          |          |         | 'aboveAverage' |

| priority      | Y        | <auto>  | determines priority ordering of styles |

| aboveAverage  | Y        | false   | if true, the rank field is a percentage, not an absolute |

| style         |          |         | style structure to apply if the comparison returns true |



### Color Scale[⬆](#contents)



| Field         | Optional | Default | Description |

| ------------- | -------- | ------- | ----------- |

| type          |          |         | 'colorScale' |

| priority      | Y        | <auto>  | determines priority ordering of styles |

| cfvo          |          |         | array of 2 to 5 Conditional Formatting Value Objects specifying way-points in the value range |

| color         |          |         | corresponding array of colours to use at given way points |

| style         |          |         | style structure to apply if the comparison returns true |



### Icon Set[⬆](#contents)



| Field         | Optional | Default | Description |

| ------------- | -------- | ------- | ----------- |

| type          |          |         | 'iconSet' |

| priority      | Y        | <auto>  | determines priority ordering of styles |

| iconSet       | Y        | 3TrafficLights | name of icon set to use |

| showValue     |          | true    | Specifies whether the cells in the applied range display the icon and cell value, or the icon only |

| reverse       |          | false   | Specifies whether the icons in the icon set specified in iconSet are show in reserve order. If custom equals "true" this value must be ignored |

| custom        |          |  false  | Specifies whether a custom set of icons is used |

| cfvo          |          |         | array of 2 to 5 Conditional Formatting Value Objects specifying way-points in the value range |

| style         |          |         | style structure to apply if the comparison returns true |



### Data Bar[⬆](#contents)



| Field      | Optional | Default | Description |

| ---------- | -------- | ------- | ----------- |

| type       |          |         | 'dataBar' |

| priority   | Y        | <auto>  | determines priority ordering of styles |

| minLength  |          | 0       | Specifies the length of the shortest data bar in this conditional formatting range |

| maxLength  |          | 100     | Specifies the length of the longest data bar in this conditional formatting range |

| showValue  |          | true    | Specifies whether the cells in the conditional formatting range display both the data bar and the numeric value or the data bar |

| gradient   |          | true    | Specifies whether the data bar has a gradient fill |

| border     |          | true    | Specifies whether the data bar has a border |

| negativeBarColorSameAsPositive  |                | true        | Specifies whether the data bar has a negative bar color that is different from the positive bar color |

| negativeBarBorderColorSameAsPositive  |          | true        | Specifies whether the data bar has a negative border color that is different from the positive border color |

| axisPosition  |       | 'auto'             | Specifies the axis position for the data bar |

| direction  |          | 'leftToRight'      | Specifies the direction of the data bar |

| cfvo          |          |         | array of 2 to 5 Conditional Formatting Value Objects specifying way-points in the value range |

| style         |          |         | style structure to apply if the comparison returns true |



### Contains Text[⬆](#contents)



| Field    | Optional | Default | Description |

| -------- | -------- | ------- | ----------- |

| type     |          |         | 'containsText' |

| priority | Y        | <auto>  | determines priority ordering of styles |

| operator |          |         | type of text comparison |

| text     |          |         | text to search for |

| style    |          |         | style structure to apply if the comparison returns true |



**Contains Text Operators**



| Operator          | Description |

| ----------------- | ----------- |

| containsText      | Apply format if cell value contains the value specified in the 'text' field |

| containsBlanks    | Apply format if cell value contains blanks |

| notContainsBlanks | Apply format if cell value does not contain blanks |

| containsErrors    | Apply format if cell value contains errors |

| notContainsErrors | Apply format if cell value does not contain errors |



### Time Period[⬆](#contents)



| Field      | Optional | Default | Description |

| ---------- | -------- | ------- | ----------- |

| type       |          |         | 'timePeriod' |

| priority   | Y        | <auto>  | determines priority ordering of styles |

| timePeriod |          |         | what time period to compare cell value to |

| style      |          |         | style structure to apply if the comparison returns true |



**Time Periods**



| Time Period       | Description |

| ----------------- | ----------- |

| lastWeek          | Apply format if cell value falls within the last week |

| thisWeek          | Apply format if cell value falls in this week |

| nextWeek          | Apply format if cell value falls in the next week |

| yesterday         | Apply format if cell value is equal to yesterday |

| today             | Apply format if cell value is equal to today |

| tomorrow          | Apply format if cell value is equal to tomorrow |

| last7Days         | Apply format if cell value falls within the last 7 days |

| lastMonth         | Apply format if cell value falls in last month |

| thisMonth         | Apply format if cell value falls in this month |

| nextMonth         | Apply format if cell value falls in next month |



## Outline Levels[⬆](#contents)



Excel supports outlining; where rows or columns can be expanded or collapsed depending on what level of detail the user wishes to view.



Outline levels can be defined in column setup:

```javascript

worksheet.columns = [

  { header: 'Id', key: 'id', width: 10 },

  { header: 'Name', key: 'name', width: 32 },

  { header: 'D.O.B.', key: 'DOB', width: 10, outlineLevel: 1 }

];

```



Or directly on the row or column

```javascript

worksheet.getColumn(3).outlineLevel = 1;

worksheet.getRow(3).outlineLevel = 1;

```



The sheet outline levels can be set on the worksheet

```javascript

// set column outline level

worksheet.properties.outlineLevelCol = 1;



// set row outline level

worksheet.properties.outlineLevelRow = 1;

```



Note: adjusting outline levels on rows or columns or the outline levels on the worksheet will incur a side effect of also modifying the collapsed property of all rows or columns affected by the property change. E.g.:

```javascript

worksheet.properties.outlineLevelCol = 1;



worksheet.getColumn(3).outlineLevel = 1;

expect(worksheet.getColumn(3).collapsed).to.be.true;



worksheet.properties.outlineLevelCol = 2;

expect(worksheet.getColumn(3).collapsed).to.be.false;

```



The outline properties can be set on the worksheet



```javascript

worksheet.properties.outlineProperties = {

  summaryBelow: false,

  summaryRight: false,

};

```



## Images[⬆](#contents)



Adding images to a worksheet is a two-step process.

First, the image is added to the workbook via the addImage() function which will also return an imageId value.

Then, using the imageId, the image can be added to the worksheet either as a tiled background or covering a cell range.



Note: As of this version, adjusting or transforming the image is not supported and images are not supported in streaming mode.



### Add Image to Workbook[⬆](#contents)



The Workbook.addImage function supports adding images by filename or by Buffer.

Note that in both cases, the extension must be specified.

Valid extension values include 'jpeg', 'png', 'gif'.



```javascript

// add image to workbook by filename

const imageId1 = workbook.addImage({

  filename: 'path/to/image.jpg',

  extension: 'jpeg',

});



// add image to workbook by buffer

const imageId2 = workbook.addImage({

  buffer: fs.readFileSync('path/to.image.png'),

  extension: 'png',

});



// add image to workbook by base64

const myBase64Image = "data:image/png;base64,iVBORw0KG...";

const imageId2 = workbook.addImage({

  base64: myBase64Image,

  extension: 'png',

});

```



### Add image background to worksheet[⬆](#contents)



Using the image id from Workbook.addImage, the background to a worksheet can be set using the addBackgroundImage function



```javascript

// set background

worksheet.addBackgroundImage(imageId1);

```



### Add image over a range[⬆](#contents)



Using the image id from Workbook.addImage, an image can be embedded within the worksheet to cover a range.

The coordinates calculated from the range will cover from the top-left of the first cell to the bottom right of the second.



```javascript

// insert an image over B2:D6

worksheet.addImage(imageId2, 'B2:D6');

```



Using a structure instead of a range string, it is possible to partially cover cells.



Note that the coordinate system used for this is zero based, so the top-left of A1 will be { col: 0, row: 0 }.

Fractions of cells can be specified by using floating point numbers, e.g. the midpoint of A1 is { col: 0.5, row: 0.5 }.



```javascript

// insert an image over part of B2:D6

worksheet.addImage(imageId2, {

  tl: { col: 1.5, row: 1.5 },

  br: { col: 3.5, row: 5.5 }

});

```



The cell range can also have the property 'editAs' which will control how the image is anchored to the cell(s)

It can have one of the following values:



| Value     | Description |

| --------- | ----------- |

| undefined | It specifies the image will be moved and sized with cells |

| oneCell   | This is the default. Image will be moved with cells but not sized |

| absolute  | Image will not be moved or sized with cells |



```javascript

ws.addImage(imageId, {

  tl: { col: 0.1125, row: 0.4 },

  br: { col: 2.101046875, row: 3.4 },

  editAs: 'oneCell'

});

```



### Add image to a cell[⬆](#contents)



You can add an image to a cell and then define its width and height in pixels at 96dpi.



```javascript

worksheet.addImage(imageId2, {

  tl: { col: 0, row: 0 },

  ext: { width: 500, height: 200 }

});

```



### Add image with hyperlinks[⬆](#contents)



You can add an image with hyperlinks to a cell, and defines the hyperlinks in image range.



```javascript

worksheet.addImage(imageId2, {

  tl: { col: 0, row: 0 },

  ext: { width: 500, height: 200 },

  hyperlinks: {

    hyperlink: 'http://www.somewhere.com',

    tooltip: 'http://www.somewhere.com'

  }

});

```



## Sheet Protection[⬆](#contents)



Worksheets can be protected from modification by adding a password.



```javascript

await worksheet.protect('the-password', options);

```



Worksheet protection can also be removed:



```javascript

worksheet.unprotect();

```



See Cell Protection for details on how

to modify individual cell protection.



**Note:** While the protect() function returns a Promise indicating

that it is async, the current implementation runs on the main

thread and will use approx 600ms on an average CPU. This can be adjusted

by setting the spinCount, which can be used to make the process either

faster or more resilient.



### Sheet Protection Options[⬆](#contents)



| Field               | Default | Description |

| ------------------- | ------- | ----------- |

| selectLockedCells   | true    | Lets the user select locked cells |

| selectUnlockedCells | true    | Lets the user select unlocked cells |

| formatCells         | false   | Lets the user format cells |

| formatColumns       | false   | Lets the user format columns |

| formatRows          | false   | Lets the user format rows |

| insertRows          | false   | Lets the user insert rows |

| insertColumns       | false   | Lets the user insert columns |

| insertHyperlinks    | false   | Lets the user insert hyperlinks |

| deleteRows          | false   | Lets the user delete rows |

| deleteColumns       | false   | Lets the user delete columns |

| sort                | false   | Lets the user sort data |

| autoFilter          | false   | Lets the user filter data in tables |

| pivotTables         | false   | Lets the user use pivot tables |

| spinCount           | 100000  | The number of hash iterations performed when protecting or unprotecting |



## File I/O[⬆](#contents)



### XLSX[⬆](#contents)



#### Reading XLSX[⬆](#contents)



Options supported when reading XLSX files.



| Field            |  Required   |    Type     |Description  |

| ---------------- | ----------- | ----------- | ----------- |

| ignoreNodes      |     N       |  Array      | A list of node names to ignore while loading the XLSX document. Improves performance in some situations. 
 Available: `sheetPr`, `dimension`, `sheetViews `, `sheetFormatPr`, `cols `, `sheetData`, `autoFilter `, `mergeCells `, `rowBreaks`, `hyperlinks `, `pageMargins`, `dataValidations`, `pageSetup`, `headerFooter `, `printOptions `, `picture`, `drawing`, `sheetProtection`, `tableParts `, `conditionalFormatting`, `extLst`,|



```javascript

// read from a file

const workbook = new Excel.Workbook();

await workbook.xlsx.readFile(filename);

// ... use workbook



// read from a stream

const workbook = new Excel.Workbook();

await workbook.xlsx.read(stream);

// ... use workbook



// load from buffer

const workbook = new Excel.Workbook();

await workbook.xlsx.load(data);

// ... use workbook



// using additional options

const workbook = new Excel.Workbook();

await workbook.xlsx.load(data, {

  ignoreNodes: [

    'dataValidations' // ignores the workbook's Data Validations

  ],

});

// ... use workbook

```



#### Writing XLSX[⬆](#contents)



```javascript

// write to a file

const workbook = createAndFillWorkbook();

await workbook.xlsx.writeFile(filename);



// write to a stream

await workbook.xlsx.write(stream);



// write to a new buffer

const buffer = await workbook.xlsx.writeBuffer();

```



### CSV[⬆](#contents)



#### Reading CSV[⬆](#contents)



Options supported when reading CSV files.



| Field            |  Required   |    Type     |Description  |

| ---------------- | ----------- | ----------- | ----------- |

| dateFormats      |     N       |  Array      | Specify the date encoding format of dayjs. |

| map              |     N       |  Function   | Custom Array.prototype.map() callback function for processing data. |

| sheetName        |     N       |  String     | Specify worksheet name. |

| parserOptions    |     N       |  Object     | [parseOptions options](https://c2fo.github.io/fast-csv/docs/parsing/options)  @fast-csv/format module to write csv data. |



```javascript

// read from a file

const workbook = new Excel.Workbook();

const worksheet = await workbook.csv.readFile(filename);

// ... use workbook or worksheet



// read from a stream

const workbook = new Excel.Workbook();

const worksheet = await workbook.csv.read(stream);

// ... use workbook or worksheet



// read from a file with European Dates

const workbook = new Excel.Workbook();

const options = {

  dateFormats: ['DD/MM/YYYY']

};

const worksheet = await workbook.csv.readFile(filename, options);

// ... use workbook or worksheet



// read from a file with custom value parsing

const workbook = new Excel.Workbook();

const options = {

  map(value, index) {

    switch(index) {

      case 0:

        // column 1 is string

        return value;

      case 1:

        // column 2 is a date

        return new Date(value);

      case 2:

        // column 3 is JSON of a formula value

        return JSON.parse(value);

      default:

        // the rest are numbers

        return parseFloat(value);

    }

  },

  // https://c2fo.github.io/fast-csv/docs/parsing/options

  parserOptions: {

    delimiter: '\t',

    quote: false,

  },

};

const worksheet = await workbook.csv.readFile(filename, options);

// ... use workbook or worksheet

```



The CSV parser uses [fast-csv](https://www.npmjs.com/package/fast-csv) to read the CSV file.

The formatterOptions in the options passed to the above write function will be passed to the @fast-csv/format module to write csv data.

 Please refer to the fast-csv README.md for details.



Dates are parsed using the npm module [dayjs](https://www.npmjs.com/package/dayjs).

 If a dateFormats array is not supplied, the following dateFormats are used:



* 'YYYY-MM-DD\[T\]HH:mm:ss'

* 'MM-DD-YYYY'

* 'YYYY-MM-DD'



Please refer to the [dayjs CustomParseFormat plugin](https://github.com/iamkun/dayjs/blob/HEAD/docs/en/Plugin.md#customparseformat) for details on how to structure a dateFormat.



#### Writing CSV[⬆](#contents)



Options supported when writing to a CSV file.



| Field            |  Required   |    Type     | Description |

| ---------------- | ----------- | ----------- | ----------- |

| dateFormat       |     N       |  String     | Specify the date encoding format of dayjs. |

| dateUTC          |     N       |  Boolean    | Specify whether ExcelJS uses `dayjs.utc ()` to convert time zone for parsing dates. |

| encoding         |     N       |  String     | Specify file encoding format. (Only applies to `.writeFile`.) |

| includeEmptyRows |     N       |  Boolean    | Specifies whether empty rows can be written. |

| map              |     N       |  Function   | Custom Array.prototype.map() callback function for processing row values. |

| sheetName        |     N       |  String     | Specify worksheet name. |

| sheetId          |     N       |  Number     | Specify worksheet ID. |

| formatterOptions |     N       |  Object     | [formatterOptions options](https://c2fo.github.io/fast-csv/docs/formatting/options/) @fast-csv/format module to write csv data. |



```javascript



// write to a file

const workbook = createAndFillWorkbook();

await workbook.csv.writeFile(filename);



// write to a stream

// Be careful that you need to provide sheetName or

// sheetId for correct import to csv.

await workbook.csv.write(stream, { sheetName: 'Page name' });



// write to a file with European Date-Times

const workbook = new Excel.Workbook();

const options = {

  dateFormat: 'DD/MM/YYYY HH:mm:ss',

  dateUTC: true, // use utc when rendering dates

};

await workbook.csv.writeFile(filename, options);



// write to a file with custom value formatting

const workbook = new Excel.Workbook();

const options = {

  map(value, index) {

    switch(index) {

      case 0:

        // column 1 is string

        return value;

      case 1:

        // column 2 is a date

        return dayjs(value).format('YYYY-MM-DD');

      case 2:

        // column 3 is a formula, write just the result

        return value.result;

      default:

        // the rest are numbers

        return value;

    }

  },

  // https://c2fo.github.io/fast-csv/docs/formatting/options

  formatterOptions: {

    delimiter: '\t',

    quote: false,

  },

};

await workbook.csv.writeFile(filename, options);



// write to a new buffer

const buffer = await workbook.csv.writeBuffer();

```



The CSV parser uses [fast-csv](https://www.npmjs.com/package/fast-csv) to write the CSV file.

 The formatterOptions in the options passed to the above write function will be passed to the @fast-csv/format module to write csv data.

 Please refer to the fast-csv README.md for details.



Dates are formatted using the npm module [dayjs](https://www.npmjs.com/package/dayjs).

 If no dateFormat is supplied, dayjs.ISO_8601 is used.

 When writing a CSV you can supply the boolean dateUTC as true to have ExcelJS parse the date without automatically

 converting the timezone using `dayjs.utc()`.



### Streaming I/O[⬆](#contents)



The File I/O documented above requires that an entire workbook is built up in memory before the file can be written.

 While convenient, it can limit the size of the document due to the amount of memory required.



A streaming writer (or reader) processes the workbook or worksheet data as it is generated,

 converting it into file form as it goes. Typically this is much more efficient on memory as the final

 memory footprint and even intermediate memory footprints are much more compact than with the document version,

 especially when you consider that the row and cell objects are disposed once they are committed.



The interface to the streaming workbook and worksheet is almost the same as the document versions with a few minor practical differences:



* Once a worksheet is added to a workbook, it cannot be removed.

* Once a row is committed, it is no longer accessible since it will have been dropped from the worksheet.

* unMergeCells() is not supported.



Note that it is possible to build the entire workbook without committing any rows.

 When the workbook is committed, all added worksheets (including all uncommitted rows) will be automatically committed.

 However in this case, little will have been gained over the Document version.



#### Streaming XLSX[⬆](#contents)



##### Streaming XLSX Writer(#contents)



The streaming XLSX workbook writer is available in the ExcelJS.stream.xlsx namespace.



The constructor takes an optional options object with the following fields:



| Field            | Description |

| ---------------- | ----------- |

| stream           | Specifies a writable stream to write the XLSX workbook to. |

| filename         | If stream not specified, this field specifies the path to a file to write the XLSX workbook to. |

| useSharedStrings | Specifies whether to use shared strings in the workbook. Default is `false`. |

| useStyles        | Specifies whether to add style information to the workbook. Styles can add some performance overhead. Default is `false`. |

| zip              | [Zip options](https://www.archiverjs.com/global.html#ZipOptions) that ExcelJS internally passes to [Archiver](https://github.com/archiverjs/node-archiver). Default is `undefined`. |



If neither stream nor filename is specified in the options, the workbook writer will create a StreamBuf object

 that will store the contents of the XLSX workbook in memory.

 This StreamBuf object, which can be accessed via the property workbook.stream, can be used to either

 access the bytes directly by stream.read() or to pipe the contents to another stream.



```javascript

// construct a streaming XLSX workbook writer with styles and shared strings

const options = {

  filename: './streamed-workbook.xlsx',

  useStyles: true,

  useSharedStrings: true

};

const workbook = new Excel.stream.xlsx.WorkbookWriter(options);

```



In general, the interface to the streaming XLSX writer is the same as the Document workbook (and worksheets)

 described above, in fact the row, cell and style objects are the same.



However there are some differences...



**Construction**



As seen above, the WorkbookWriter will typically require the output stream or file to be specified in the constructor.



**Committing Data**



When a worksheet row is ready, it should be committed so that the row object and contents can be freed.

 Typically this would be done as each row is added...



```javascript

worksheet.addRow({

   id: i,

   name: theName,

   etc: someOtherDetail

}).commit();

```



The reason the WorksheetWriter does not commit rows as they are added is to allow cells to be merged across rows:



```javascript

worksheet.mergeCells('A1:B2');

worksheet.getCell('A1').value = 'I am merged';

worksheet.getCell('C1').value = 'I am not';

worksheet.getCell('C2').value = 'Neither am I';

worksheet.getRow(2).commit(); // now rows 1 and two are committed.

```



As each worksheet is completed, it must also be committed:



```javascript

// Finished adding data. Commit the worksheet

worksheet.commit();

```



To complete the XLSX document, the workbook must be committed. If any worksheet in a workbook are uncommitted,

 they will be committed automatically as part of the workbook commit.



```javascript

// Finished the workbook.

await workbook.commit();

// ... the stream has been written

```



##### Streaming XLSX Reader(#contents)



The streaming XLSX workbook reader is available in the ExcelJS.stream.xlsx namespace.



The constructor takes a required input argument and an optional options argument:



| Argument              | Description |

| --------------------- | ----------- |

| input (required)      | Specifies the name of the file or the readable stream from which to read the XLSX workbook. |

| options (optional)    | Specifies how to handle the event types occuring during the read parsing. |

| options.entries       | Specifies whether to emit entries (`'emit'`) or not (`'ignore'`). Default is `'emit'`. |

| options.sharedStrings | Specifies whether to cache shared strings (`'cache'`), which inserts them into the respective cell values, or whether to emit them (`'emit'`) or ignore them (`'ignore'`), in both of which case the cell value will be a reference to the shared string's index. Default is `'cache'`. |

| options.hyperlinks    | Specifies whether to cache hyperlinks (`'cache'`), which inserts them into their respective cells, whether to emit them (`'emit'`) or whether to ignore them (`'ignore'`). Default is `'cache'`. |

| options.styles        | Specifies whether to cache styles (`'cache'`), which inserts them into their respective rows and cells, or whether to ignore them (`'ignore'`). Default is `'cache'`. |

| options.worksheets    | Specifies whether to emit worksheets (`'emit'`) or not (`'ignore'`). Default is `'emit'`. |



```js

const workbookReader = new ExcelJS.stream.xlsx.WorkbookReader('./file.xlsx');

for await (const worksheetReader of workbookReader) {

  for await (const row of worksheetReader) {

    // ...

  }

}

```



Please note that `worksheetReader` returns an array of rows rather than each row individually for performance reasons: https://github.com/nodejs/node/issues/31979



###### Iterating over all events(#contents)



Events on workbook are 'worksheet', 'shared-strings' and 'hyperlinks'. Events on worksheet are 'row' and 'hyperlinks'.



```js

const options = {

  sharedStrings: 'emit',

  hyperlinks: 'emit',

  worksheets: 'emit',

};

const workbook = new ExcelJS.stream.xlsx.WorkbookReader('./file.xlsx', options);

for await (const {eventType, value} of workbook.parse()) {

  switch (eventType) {

    case 'shared-strings':

      // value is the shared string

    case 'worksheet':

      // value is the worksheetReader

    case 'hyperlinks':

      // value is the hyperlinksReader

  }

}

```



###### Readable stream(#contents)



While we strongly encourage to use async iteration, we also expose a streaming interface for backwards compatibility.



```js

const options = {

  sharedStrings: 'emit',

  hyperlinks: 'emit',

  worksheets: 'emit',

};

const workbookReader = new ExcelJS.stream.xlsx.WorkbookReader('./file.xlsx', options);

workbookReader.read();



workbookReader.on('worksheet', worksheet => {

  worksheet.on('row', row => {

  });

});



workbookReader.on('shared-strings', sharedString => {

  // ...

});



workbookReader.on('hyperlinks', hyperlinksReader => {

  // ...

});



workbookReader.on('end', () => {

  // ...

});

workbookReader.on('error', (err) => {

  // ...

});

```



# Browser[⬆](#contents)



A portion of this library has been isolated and tested for use within a browser environment.



Due to the streaming nature of the workbook reader and workbook writer, these have not been included.

Only the document based workbook may be used (see Create a Workbook for details).



For example code using ExcelJS in the browser take a look at the spec/browser folder in the github repo.



## Prebundled[⬆](#contents)



The following files are pre-bundled and included inside the dist folder.



* exceljs.js

* exceljs.min.js



# Value Types[⬆](#contents)



The following value types are supported.



## Null Value[⬆](#contents)



Enum: Excel.ValueType.Null



A null value indicates an absence of value and will typically not be stored when written to file (except for merged cells).

  It can be used to remove the value from a cell.



E.g.



```javascript

worksheet.getCell('A1').value = null;

```



## Merge Cell[⬆](#contents)



Enum: Excel.ValueType.Merge



A merge cell is one that has its value bound to another 'master' cell.

  Assigning to a merge cell will cause the master's cell to be modified.



## Number Value[⬆](#contents)



Enum: Excel.ValueType.Number



A numeric value.



E.g.



```javascript

worksheet.getCell('A1').value = 5;

worksheet.getCell('A2').value = 3.14159;

```



## String Value[⬆](#contents)



Enum: Excel.ValueType.String



A simple text string.



E.g.



```javascript

worksheet.getCell('A1').value = 'Hello, World!';

```



## Date Value[⬆](#contents)



Enum: Excel.ValueType.Date



A date value, represented by the JavaScript Date type.



E.g.



```javascript

worksheet.getCell('A1').value = new Date(2017, 2, 15);

```



## Hyperlink Value[⬆](#contents)



Enum: Excel.ValueType.Hyperlink



A URL with both text and link value.



E.g.

```javascript

// link to web

worksheet.getCell('A1').value = {

  text: 'www.mylink.com',

  hyperlink: 'http://www.mylink.com',

  tooltip: 'www.mylink.com'

};



// internal link

worksheet.getCell('A1').value = { text: 'Sheet2', hyperlink: '#\'Sheet2\'!A1' };

```



## Formula Value[⬆](#contents)



Enum: Excel.ValueType.Formula



An Excel formula for calculating values on the fly.

  Note that while the cell type will be Formula, the cell may have an effectiveType value that will

  be derived from the result value.



Note that ExcelJS cannot process the formula to generate a result, it must be supplied.



Note that function semantic names must be in English and the separator must be a comma.



E.g.



```javascript

worksheet.getCell('A3').value = { formula: 'A1+A2', result: 7 };

worksheet.getCell('A3').value = { formula: 'SUM(A1,A2)', result: 7 };

```



Cells also support convenience getters to access the formula and result:



```javascript

worksheet.getCell('A3').formula === 'A1+A2';

worksheet.getCell('A3').result === 7;

```



### Shared Formula[⬆](#contents)



Shared formulae enhance the compression of the xlsx document by decreasing the repetition

of text within the worksheet xml.

The top-left cell in a range is the designated master and will hold the

formula that all the other cells in the range will derive from.

The other 'slave' cells can then refer to this master cell instead of redefining the

whole formula again.

Note that the master formula will be translated to the slave cells in the usual

Excel fashion so that references to other cells will be shifted down and

to the right depending on the slave's offset to the master.

For example: if the master cell A2 has a formula referencing A1 then

if cell B2 shares A2's formula, then it will reference B1.



A master formula can be assigned to a cell along with the slave cells in its range



```javascript

worksheet.getCell('A2').value = {

  formula: 'A1',

  result: 10,

  shareType: 'shared',

  ref: 'A2:B3'

};

```



A shared formula can be assigned to a cell using a new value form:



```javascript

worksheet.getCell('B2').value = { sharedFormula: 'A2', result: 10 };

```



This specifies that the cell B2 is a formula that will be derived from the formula in

A2 and its result is 10.



The formula convenience getter will translate the formula in A2 to what it should be in B2:



```javascript

expect(worksheet.getCell('B2').formula).to.equal('B1');

```



Shared formulae can be assigned into a sheet using the 'fillFormula' function:



```javascript

// set A1 to starting number

worksheet.getCell('A1').value = 1;



// fill A2 to A10 with ascending count starting from A1

worksheet.fillFormula('A2:A10', 'A1+1', [2,3,4,5,6,7,8,9,10]);

```



fillFormula can also use a callback function to calculate the value at each cell



```javascript

// fill A2 to A100 with ascending count starting from A1

worksheet.fillFormula('A2:A100', 'A1+1', (row, col) => row);

```



### Formula Type[⬆](#contents)



To distinguish between real and translated formula cells, use the formulaType getter:



```javascript

worksheet.getCell('A3').formulaType === Enums.FormulaType.Master;

worksheet.getCell('B3').formulaType === Enums.FormulaType.Shared;

```



Formula type has the following values:



| Name                       |  Value  |

| -------------------------- | ------- |

| Enums.FormulaType.None     |   0     |

| Enums.FormulaType.Master   |   1     |

| Enums.FormulaType.Shared   |   2     |



### Array Formula[⬆](#contents)



A new way of expressing shared formulae in Excel is the array formula.

In this form, the master cell is the only cell that contains any information relating to a formula.

It contains the shareType 'array' along with the range of cells it applies to and the formula that will be copied.

The rest of the cells are regular cells with regular values.



Note: array formulae are not translated in the way shared formulae are.

So if master cell A2 refers to A1, then slave cell B2 will also refer to A1.



E.g.

```javascript

// assign array formula to A2:B3

worksheet.getCell('A2').value = {

  formula: 'A1',

  result: 10,

  shareType: 'array',

  ref: 'A2:B3'

};



// it may not be necessary to fill the rest of the values in the sheet

```



The fillFormula function can also be used to fill an array formula



```javascript

// fill A2:B3 with array formula "A1"

worksheet.fillFormula('A2:B3', 'A1', [1,1,1,1], 'array');

```



## Rich Text Value[⬆](#contents)



Enum: Excel.ValueType.RichText



Rich, styled text.



E.g.

```javascript

worksheet.getCell('A1').value = {

  richText: [

    { text: 'This is '},

    {font: {italic: true}, text: 'italic'},

  ]

};

```



## Boolean Value[⬆](#contents)



Enum: Excel.ValueType.Boolean



E.g.



```javascript

worksheet.getCell('A1').value = true;

worksheet.getCell('A2').value = false;

```



## Error Value[⬆](#contents)



Enum: Excel.ValueType.Error



E.g.



```javascript

worksheet.getCell('A1').value = { error: '#N/A' };

worksheet.getCell('A2').value = { error: '#VALUE!' };

```



The current valid Error text values are:



| Name                           | Value       |

| ------------------------------ | ----------- |

| Excel.ErrorValue.NotApplicable | #N/A        |

| Excel.ErrorValue.Ref           | #REF!       |

| Excel.ErrorValue.Name          | #NAME?      |

| Excel.ErrorValue.DivZero       | #DIV/0!     |

| Excel.ErrorValue.Null          | #NULL!      |

| Excel.ErrorValue.Value         | #VALUE!     |

| Excel.ErrorValue.Num           | #NUM!       |



# Interface Changes[⬆](#contents)



Every effort is made to make a good consistent interface that doesn't break through the versions but regrettably, now and then some things have to change for the greater good.



## 0.1.0[⬆](#contents)



### Worksheet.eachRow[⬆](#contents)



The arguments in the callback function to Worksheet.eachRow have been swapped and changed; it was function(rowNumber,rowValues), now it is function(row, rowNumber) which gives it a look and feel more like the underscore (_.each) function and priorities the row object over the row number.



### Worksheet.getRow[⬆](#contents)



This function has changed from returning a sparse array of cell values to returning a Row object. This enables accessing row properties and will facilitate managing row styles and so on.



The sparse array of cell values is still available via Worksheet.getRow(rowNumber).values;



## 0.1.1[⬆](#contents)



### cell.model[⬆](#contents)



cell.styles renamed to cell.style



## 0.2.44[⬆](#contents)



Promises returned from functions switched from Bluebird to native node Promise which can break calling code

 if they rely on Bluebird's extra features.



To mitigate this the following two changes were added to 0.3.0:



* A more fully featured and still browser compatible promise lib is used by default. This lib supports many of the features of Bluebird but with a much lower footprint.

* An option to inject a different Promise implementation. See Config section for more details.



# Config[⬆](#contents)



ExcelJS now supports dependency injection for the promise library.

 You can restore Bluebird promises by including the following code in your module...



```javascript

ExcelJS.config.setValue('promise', require('bluebird'));

```



Please note: I have tested ExcelJS with bluebird specifically (since up until recently this was the library it used).

 From the tests I have done it will not work with Q.



# Caveats[⬆](#contents)



## Dist Folder[⬆](#contents)



Before publishing this module, the source code is transpiled and otherwise processed

before being placed in a dist/ folder.

This README identifies two files - a browserified bundle and minified version.

No other contents of the dist/ folder are guaranteed in any way other than the file

specified as "main" in the package.json



# Known Issues[⬆](#contents)



## Testing with Puppeteer[⬆](#contents)



The test suite included in this lib includes a small script executed in a headless browser

to validate the bundled packages. At the time of this writing, it appears that

this test does not play nicely in the Windows Linux subsystem.



For this reason, the browser test can be disabled by the existence of a file named .disable-test-browser



```bash

sudo apt-get install libfontconfig

```



## Splice vs Merge[⬆](#contents)



If any splice operation affects a merged cell, the merge group will not be moved correctly



# Release History[⬆](#contents)



| Version | Changes |

|---------| ------- |

| 0.0.9   | 
 |

| 0.1.0   |  |

| 0.1.1   | 
    

  • Bug Fixes
      

    • More textual data written properly to xml (including text, hyperlinks, formula results and format codes)
      • 

    • Better date format code recognition
      • 

    

    • 

  • Cell Font Style
    • 

 |

| 0.1.2   | 
  • Fixed potential race condition on zip write
 |

| 0.1.3   |  |

| 0.1.5   | 
    

  • Bug Fixes
      

    • Now handles 10 or more worksheets in one workbook
      • 

    • theme1.xml file properly added and referenced
      • 

    

    • 

  • Cell Borders
    • 

 |

| 0.1.6   | 
    

  • Bug Fixes
    • More compatible theme1.xml included in XLSX file
    

    • 

  • Cell Fills
    • 

 |

| 0.1.8   | 
    

  • Bug Fixes
      

    • More compatible theme1.xml included in XLSX file
      • 

    • Fixed filename case issue
      • 

    

    • 

  • Cell Fills
    • 

 |

| 0.1.9   | 
    

  • Bug Fixes
      

    • Added docProps files to satisfy Mac Excel users
      • 

    • Fixed filename case issue
      • 

    • Fixed worksheet id issue
      • 

    

    • 

  • Core Workbook Properties
    • 

 |

| 0.1.10  | 
    

  • Bug Fixes
    • Handles File Not Found error
    

    • 

  • CSV Files
    • 

 |

| 0.1.11  |  |

| 0.2.0   | 
    

  • 

    Streaming XLSX Writer
    • At long last ExcelJS can support writing massive XLSX files in a scalable memory efficient manner. Performance has been optimised and even smaller spreadsheets can be faster to write than the document writer. Options have been added to control the use of shared strings and styles as these can both have a considerable effect on performance
    

    • 

  • 

    Worksheet.lastRow
    • Access the last editable row in a worksheet.
    

    • 

  • 

    Row.commit()
    • For streaming writers, this method commits the row (and any previous rows) to the stream. Committed rows will no longer be editable (and are typically deleted from the worksheet object). For Document type workbooks, this method has no effect.
    

    • 

 |

| 0.2.2   | 
  • 

    One Billion Cells
    • Achievement Unlocked: A simple test using ExcelJS has created a spreadsheet with 1,000,000,000 cells. Made using random data with 100,000,000 rows of 10 cells per row. I cannot validate the file yet as Excel will not open it and I have yet to implement the streaming reader but I have every confidence that it is good since 1,000,000 rows loads ok.
    

 |

| 0.2.3   | 
    

  • Bug Fixes

    • 

  • 

    Streaming XLSX Writer
    • At long last ExcelJS can support writing massive XLSX files in a scalable memory efficient manner. Performance has been optimised and even smaller spreadsheets can be faster to write than the document writer. Options have been added to control the use of shared strings and styles as these can both have a considerable effect on performance
    

    • 

  • 

    Worksheet.lastRow
    • Access the last editable row in a worksheet.
    

    • 

  • 

    Row.commit()
    • For streaming writers, this method commits the row (and any previous rows) to the stream. Committed rows will no longer be editable (and are typically deleted from the worksheet object). For Document type workbooks, this method has no effect.
    

    • 

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| 0.2.4   |  |

| 0.2.6   |  |

| 0.2.7   | 
  • 

    Data Validations
    • Cells can now define validations that controls the valid values the cell can have
    

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| 0.2.8   |  |

| 0.2.9   | 
  • Fixed "read property 'richText' of undefined error. Thanks to  james075

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| 0.2.10  | 
  • Refactoring Complete. All unit and integration tests pass.
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| 0.2.11  |  |

| 0.2.12  |  |

| 0.2.13  |  |

| 0.2.14  |  |

| 0.2.15  |  |

| 0.2.16  |  |

| 0.2.17  |  |

| 0.2.18  |  |

| 0.2.19  |  |

| 0.2.20  |  |

| 0.2.21  |  |

| 0.2.22  |  |

| 0.2.23  | 
  • Merged Fall back to JSON.stringify() if unknown Cell.Type #137 with some modification. If a cell value is assigned to an unrecognisable javascript object, the stored value in xlsx and csv files will  be JSON stringified. Note that if the file is read again, no attempt will be made to parse the stringified JSON text. Thanks to wulfsolter for the contribution.
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| 0.2.24  | 
  • Merged Protect cell fix #166. This does not mean full support for protected cells merely that the parser is not confused by the extra xml. Thanks to jayflo for the contribution.
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| 0.2.25  | 
  • Added functions to delete cells, rows and columns from a worksheet. Modelled after the Array splice method, the functions allow cells, rows and columns to be deleted (and optionally inserted). See Columns and Rows for details.
    Note: Not compatible with cell merges

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| 0.2.26  |  |

| 0.2.27  |  |

| 0.2.28  |  |

| 0.2.29  |  |

| 0.2.30  | 
  • Merged Fix issue #178 #201. Adds the following properties to workbook:
      

    • title
      • 

    • subject
      • 

    • keywords
      • 

    • category
      • 

    • description
      • 

    • company
      • 

    • manager
      • 

    Thanks to stavenko for the contribution.
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| 0.2.31  |  |

| 0.2.32  |  |

| 0.2.33  |  |

| 0.2.34  |  |

| 0.2.35  |  |

| 0.2.36  |  |

| 0.2.37  |  |

| 0.2.38  |  |

| 0.2.39  |  |

| 0.2.42  | 
    

  • Browser Compatible!
    • Well mostly. I have added a browser sub-folder that contains a browserified bundle and an index.js that can be used to generate another. See Browser section for details.
    

    • 

  • Fixed corrupted theme.xml. Apologies for letting that through.
    • 

  • Merged [BUGFIX] data validation formulae undefined #253. Thanks to jayflo for the contribution.
    • 

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| 0.2.43  |  |

| 0.2.44  | 
  • Reduced Dependencies.
    • Goodbye lodash, goodbye bluebird. Minified bundle is now just over half what it was in the first version.
    

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| 0.2.45  |  |

| 0.2.46  |  |

| 0.3.0   |  |

| 0.3.1   |  |

| 0.4.0   |  |

| 0.4.1   |  |

| 0.4.2   | 
  • 

    Addressed the following issues:
    

    These issues are potentially caused by a bug that caused colours with zero themes, tints or indexes to be rendered and parsed incorrectly.
    Regarding themes: the theme files stored inside the xlsx container hold important information regarding colours, styles etc and if the theme information from a loaded xlsx file is lost, the results can be unpredictable and undesirable. To address this, when an ExcelJS Workbook parses an XLSX file, it will preserve any theme files it finds and include them when writing to a new XLSX. If this behaviour is not desired, the Workbook class exposes a clearThemes() function which will drop the theme content. Note that this behaviour is only implemented in the document based Workbook class, not the streamed Reader and Writer.
    

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| 0.4.3   |  |

| 0.4.4   |  |

| 0.4.6   |  |

| 0.4.9   | 
    

  • Switching to transpiled code for distribution. This will ensure compatability with 4.0.0 and above from here on. And it will also allow use of much more expressive JS code in the lib folder!
    • 

  • 

    Basic Image Support!Images can now be added to worksheets either as a tiled background or stretched over a range. Note: other features like rotation, etc. are not supported yet and will reqeuire further work.
    • 

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| 0.4.10  |  |

| 0.4.11  |  |

| 0.4.12  |  |

| 0.4.13  |  |

| 0.4.14  |  |

| 0.5.0   |  |

| 0.5.1   | 

| 0.6.0   |  |

| 0.6.1   |  |

| 0.6.2   |  |

| 0.7.0   |  |

| 0.7.1   | 

| 0.8.0   |  |

| 0.8.1   |  |

| 0.8.2   |  |

| 0.8.3   |  |

| 0.8.4   |  |

| 0.8.5   |  |

| 0.9.0   |   |

| 0.9.1   |  |

| 1.0.0   |  |

| 1.0.1   |  |

| 1.0.2   |  |

| 1.1.0   |  |

| 1.1.1   |  |

| 1.1.2   |  |

| 1.1.3   |  |

| 1.2.0   |  |

| 1.2.1   |  |

| 1.3.0   |  |

| 1.4.2   |  |

| 1.4.3   |  |

| 1.4.5   |  |

| 1.4.6   |  |

| 1.4.7   |  |

| 1.4.8   |  |

| 1.4.9   |  |

| 1.4.10  |  |

| 1.4.12  |  |

| 1.4.13  |  |

| 1.5.0   |  |

| 1.5.1   |  |

| 1.6.0   |  |

| 1.6.1   |  |

| 1.6.2   |  |

| 1.6.3   |  |

| 1.7.0   |  |

| 1.8.0   |  |

| 1.9.0   |  |

| 1.9.1   |  |

| 1.10.0  |  |

| 1.11.0  |  |

| 1.12.0  |  |

| 1.12.1  |  |

| 1.12.2  |  |

| 1.13.0  |  |

| 1.14.0  |  |

| 1.15.0  |  |

| 2.0.1   | 
Major Version Change
 
Introducing async/await to ExcelJS!
 
The new async and await features of JavaScript can help a lot to make code more readable and maintainable. To avoid confusion, particularly with returned promises from async functions, we have had to remove the Promise class configuration option and from v2 onwards ExcelJS will use native Promises. Since this is potentially a breaking change we're bumping the major version for this release.
 
Changes
  |

| 3.0.0   | 
Another Major Version Change
 
Javascript has changed a lot over the years, and so have the modules and technologies surrounding it. To this end, this major version of ExcelJS changes the structure of the publish artefacts:
 
Main Export is now the Original Javascript Source
 
Prior to this release, the transpiled ES5 code was exported as the package main. From now on, the package main comes directly from the lib/ folder. This means a number of dependencies have been removed, including the polyfills.
 
ES5 and Browserify are Still Included
 
In order to support those that still require ES5 ready code (e.g. as dependencies in web apps) the source code will still be transpiled and available  in dist/es5.
 
The ES5 code is also browserified and available as dist/exceljs.js or dist/exceljs.min.js
 
See the section Importing for details
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| 3.1.0   |  |

| 3.2.0   |  |

| 3.3.0   |  |

| 3.3.1   |  |

| 3.4.0   |  |

| 3.5.0   | 
     
  •  Conditional Formatting A subset of Excel Conditional formatting has been implemented! Specifically the formatting rules that do not require XML to be rendered inside an <extLst> node, or in other words everything except databar and three icon sets (3Triangles, 3Stars, 5Boxes). These will be implemented in due course 
    •  
  •  Merged remove core-js/ import #1030. Many thanks to jeffrey n. carre for this contribution. This change is used to create a new browserified bundle artefact that does not include any polyfills. See Browserify for details. 
    •  
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| 3.6.0   |  |

| 3.6.1   |  |

| 3.7.0   |  |

| 3.8.0   |  |

| 3.8.1   |  |

| 3.8.2   |  |

| 3.9.0   |  |

| 3.10.0  |  |

| 4.0.1   |  |

| 4.1.0   |  |

| 4.1.1   |  |

| 4.2.0   |  |

| 4.2.1   |  |

| 4.3.0   |  |