https://github.com/stdlib-js/string-base-for-each-code-point
Invoke a function for each Unicode code point in a string.
https://github.com/stdlib-js/string-base-for-each-code-point
each for foreach iterate javascript node node-js nodejs stdlib str string unicode util utilities utility utils
Last synced: 4 months ago
JSON representation
Invoke a function for each Unicode code point in a string.
- Host: GitHub
- URL: https://github.com/stdlib-js/string-base-for-each-code-point
- Owner: stdlib-js
- License: apache-2.0
- Created: 2023-07-15T18:54:34.000Z (almost 3 years ago)
- Default Branch: main
- Last Pushed: 2025-01-13T02:13:50.000Z (over 1 year ago)
- Last Synced: 2025-06-04T03:01:45.214Z (12 months ago)
- Topics: each, for, foreach, iterate, javascript, node, node-js, nodejs, stdlib, str, string, unicode, util, utilities, utility, utils
- Language: JavaScript
- Homepage: https://github.com/stdlib-js/stdlib
- Size: 241 KB
- Stars: 1
- Watchers: 3
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
- Code of conduct: CODE_OF_CONDUCT.md
- Citation: CITATION.cff
- Security: SECURITY.md
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README
About stdlib...
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# forEachCodePoint
[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url]
> Invokes a function for each Unicode code point in a string.
## Installation
```bash
npm install @stdlib/string-base-for-each-code-point
```
Alternatively,
- To load the package in a website via a `script` tag without installation and bundlers, use the [ES Module][es-module] available on the [`esm`][esm-url] branch (see [README][esm-readme]).
- If you are using Deno, visit the [`deno`][deno-url] branch (see [README][deno-readme] for usage intructions).
- For use in Observable, or in browser/node environments, use the [Universal Module Definition (UMD)][umd] build available on the [`umd`][umd-url] branch (see [README][umd-readme]).
The [branches.md][branches-url] file summarizes the available branches and displays a diagram illustrating their relationships.
To view installation and usage instructions specific to each branch build, be sure to explicitly navigate to the respective README files on each branch, as linked to above.
## Usage
```javascript
var forEachCodePoint = require( '@stdlib/string-base-for-each-code-point' );
```
#### forEachCodePoint( str, clbk\[, thisArg ] )
Invokes a function for each Unicode code point in a string.
```javascript
function log( value, index ) {
console.log( '%d: %s', index, value );
}
forEachCodePoint( 'Beep!', log );
/* =>
0: B
1: e
2: e
3: p
4: !
*/
```
The invoked function is provided three arguments:
- **value**: Unicode code point.
- **index**: starting Unicode code point index.
- **str**: input string.
To set the function execution context, provide a `thisArg`.
```javascript
function clbk() {
this.count += 1;
}
var str = '👉🏿';
var ctx = {
'count': 0
};
forEachCodePoint( str, clbk, ctx );
var cnt = ctx.count;
// returns 2
```
## Examples
```javascript
var forEachCodePoint = require( '@stdlib/string-base-for-each-code-point' );
function log( value, index ) {
console.log( '%d: %s', index, value );
}
forEachCodePoint( 'presidential election', log );
forEachCodePoint( 'Iñtërnâtiônàlizætiøn', log );
forEachCodePoint( '🌷🍕', log );
forEachCodePoint( '\uD834\uDD1E', log );
```
* * *
## See Also
- [`@stdlib/string-base/for-each`][@stdlib/string/base/for-each]: invoke a function for each UTF-16 code unit in a string.
- [`@stdlib/string-base/for-each-grapheme-cluster`][@stdlib/string/base/for-each-grapheme-cluster]: invoke a function for each grapheme cluster (i.e., user-perceived character) in a string.
- [`@stdlib/string-for-each`][@stdlib/string/for-each]: invoke a function for each character in a string.
* * *
## Notice
This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].
#### Community
[![Chat][chat-image]][chat-url]
---
## License
See [LICENSE][stdlib-license].
## Copyright
Copyright © 2016-2026. The Stdlib [Authors][stdlib-authors].
[npm-image]: http://img.shields.io/npm/v/@stdlib/string-base-for-each-code-point.svg
[npm-url]: https://npmjs.org/package/@stdlib/string-base-for-each-code-point
[test-image]: https://github.com/stdlib-js/string-base-for-each-code-point/actions/workflows/test.yml/badge.svg?branch=main
[test-url]: https://github.com/stdlib-js/string-base-for-each-code-point/actions/workflows/test.yml?query=branch:main
[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/string-base-for-each-code-point/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/string-base-for-each-code-point?branch=main
[chat-image]: https://img.shields.io/badge/zulip-join_chat-brightgreen.svg
[chat-url]: https://stdlib.zulipchat.com
[stdlib]: https://github.com/stdlib-js/stdlib
[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors
[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules
[deno-url]: https://github.com/stdlib-js/string-base-for-each-code-point/tree/deno
[deno-readme]: https://github.com/stdlib-js/string-base-for-each-code-point/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/string-base-for-each-code-point/tree/umd
[umd-readme]: https://github.com/stdlib-js/string-base-for-each-code-point/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/string-base-for-each-code-point/tree/esm
[esm-readme]: https://github.com/stdlib-js/string-base-for-each-code-point/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/string-base-for-each-code-point/blob/main/branches.md
[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/string-base-for-each-code-point/main/LICENSE
[@stdlib/string/base/for-each]: https://github.com/stdlib-js/string-base-for-each
[@stdlib/string/base/for-each-grapheme-cluster]: https://github.com/stdlib-js/string-base-for-each-grapheme-cluster
[@stdlib/string/for-each]: https://github.com/stdlib-js/string-for-each