34 lines
887 B
Markdown
34 lines
887 B
Markdown
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# wcwidth
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Determine columns needed for a fixed-size wide-character string
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----
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wcwidth is a simple JavaScript port of [wcwidth](http://man7.org/linux/man-pages/man3/wcswidth.3.html) implemented in C by Markus Kuhn.
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JavaScript port [originally](https://github.com/mycoboco/wcwidth.js) written by Woong Jun <woong.jun@gmail.com> (http://code.woong.org/)
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## Example
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```js
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'한'.length // => 1
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wcwidth('한'); // => 2
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'한글'.length // => 2
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wcwidth('한글'); // => 4
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```
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`wcwidth()` and its string version, `wcswidth()` are defined by IEEE Std
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1002.1-2001, a.k.a. POSIX.1-2001, and return the number of columns used
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to represent the given wide character and string.
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Markus's implementation assumes the wide character given to those
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functions to be encoded in ISO 10646, which is almost true for
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JavaScript's characters.
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[Further explaination here](docs)
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## License
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MIT
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