https://github.com/shinnn/is-4byte-code-point

Check if a given number is a code point of UTF-8 4-byte character
https://github.com/shinnn/is-4byte-code-point

Last synced: 27 days ago
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Check if a given number is a code point of UTF-8 4-byte character

• Host: GitHub
• URL: https://github.com/shinnn/is-4byte-code-point
• Owner: shinnn
• License: mit
• Created: 2016-06-09T06:47:57.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2016-08-01T09:45:24.000Z (over 8 years ago)
• Last Synced: 2024-10-08T06:21:00.632Z (about 1 month ago)
• Language: JavaScript
• Homepage: https://npm.runkit.com/is-4byte-code-point
• Size: 3.91 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# is-4byte-code-point

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[![Dependency Status](https://david-dm.org/shinnn/is-4byte-code-point.svg)](https://david-dm.org/shinnn/is-4byte-code-point)

Check if a given number is a [code point](http://unicode.org/glossary/#code_point) of [UTF-8](https://tools.ietf.org/html/rfc3629) 4-byte character

```javascript

import is4byteCodePoint from 'is-4byte-code-point';

is4byteCodePoint('Ａ'.codePointAt(0)); //=> false

is4byteCodePoint('👍'.codePointAt(0)); //=> true

```

## Installation

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

```

npm install is-4byte-code-point

```

#### [Bower](http://bower.io/)

```

bower install is-4byte-code-point

```

### is4byteCodePoint(*number*)

*number*: `Number`  

Return: `Boolean`

It returns `true` if the number is no fewer than `65536` and no greater than `1114111`, otherwise `false`.

```javascript

is4byteCodePoint(-1); //=> false

is4byteCodePoint(0); //=> false

is4byteCodePoint(100000); //=> true

is4byteCodePoint(1000000); //=> false

is4byteCodePoint(NaN); //=> false

is4byteCodePoint(Infinity); //=> false

```

## License

Copyright (c) 2016 [Shinnosuke Watanabe](https://github.com/shinnn)

Licensed under [the MIT License](./LICENSE).