https://github.com/shinnn/find-indexes

Like Array#findIndex() but return all indexes
https://github.com/shinnn/find-indexes

Last synced: 27 days ago
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Like Array#findIndex() but return all indexes

• Host: GitHub
• URL: https://github.com/shinnn/find-indexes
• Owner: shinnn
• Created: 2016-12-20T11:43:22.000Z (almost 8 years ago)
• Default Branch: master
• Last Pushed: 2017-05-08T09:43:43.000Z (over 7 years ago)
• Last Synced: 2024-09-28T02:05:49.700Z (about 2 months ago)
• Language: JavaScript
• Homepage: https://runkit.com/npm/find-indexes
• Size: 4.88 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# find-indexes

[![NPM version](https://img.shields.io/npm/v/find-indexes.svg)](https://www.npmjs.com/package/find-indexes)

[![Bower version](https://img.shields.io/bower/v/find-indexes.svg)](https://github.com/shinnn/find-indexes/releases)

[![Build Status](https://travis-ci.org/shinnn/find-indexes.svg?branch=master)](https://travis-ci.org/shinnn/find-indexes)

[![Coverage Status](https://img.shields.io/coveralls/shinnn/find-indexes.svg)](https://coveralls.io/r/shinnn/find-indexes)

Like [`Array#findIndex()`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/findIndex), but return all indexes instead of the first one

```javascript

import findIndexes from 'find-indexes';

findIndexes(['a', 'b', 'c', 'b'], val => val === 'b'); //=> [1, 3]

```

## Installation

### [npm](https://www.npmjs.com/)

```

npm install find-indexes

```

### [bower](https://bower.io/)

```

bower install find-indexes

```

## API

```javascript

import findIndexes from 'find-indexes';

```

### findIndexes(*array*, *fn*)

*array*: `Array`  

*fn*: `Function`  

Return: `Array`

It returns all indexes of the the array that satisfy the provided testing function. Otherwise it returns an empty array.

```javascript

findIndexes([0.1, 0.5], Math.ceil); //=> [0, 1]

findIndexes([0.1, 0.5], Math.round); //=> [1]

findIndexes([0.1, 0.5], Math.floor); //=> []

```

## Related projects

* [arr-indexes-of](https://github.com/shinnn/arr-indexes-of) - [`Array#indexOf()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/indexOf) version

* [str-indexes-of](https://github.com/shinnn/str-indexes-of) - [`String#indexOf()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf) version

## License

[Creative Commons Zero v1.0 Universal](https://creativecommons.org/publicdomain/zero/1.0/deed)