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| 1 | # wcwidth
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| 2 |
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| 3 | Determine columns needed for a fixed-size wide-character string
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| 4 |
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| 5 | ----
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| 6 |
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| 7 | 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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| 8 |
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| 9 | 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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| 10 |
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| 11 | ## Example
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| 12 |
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| 13 | ```js
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| 14 | '한'.length // => 1
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| 15 | wcwidth('한'); // => 2
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| 16 |
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| 17 | '한글'.length // => 2
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| 18 | wcwidth('한글'); // => 4
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| 19 | ```
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| 20 |
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| 21 | `wcwidth()` and its string version, `wcswidth()` are defined by IEEE Std
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| 22 | 1002.1-2001, a.k.a. POSIX.1-2001, and return the number of columns used
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| 23 | to represent the given wide character and string.
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| 24 |
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| 25 | Markus's implementation assumes the wide character given to those
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| 26 | functions to be encoded in ISO 10646, which is almost true for
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| 27 | JavaScript's characters.
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| 28 |
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| 29 | [Further explaination here](docs)
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| 30 |
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| 31 | ## License
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| 32 |
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| 33 | MIT
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