1 # string-width [![Build Status](https://travis-ci.org/sindresorhus/string-width.svg?branch=master)](https://travis-ci.org/sindresorhus/string-width)
3 > Get the visual width of a string - the number of columns required to display it
5 Some Unicode characters are [fullwidth](https://en.wikipedia.org/wiki/Halfwidth_and_fullwidth_forms) and use double the normal width. [ANSI escape codes](http://en.wikipedia.org/wiki/ANSI_escape_code) are stripped and doesn't affect the width.
7 Useful to be able to measure the actual width of command-line output.
13 $ npm install --save string-width
20 const stringWidth = require('string-width');
25 stringWidth('\u001b[1m古\u001b[22m');
35 - [string-width-cli](https://github.com/sindresorhus/string-width-cli) - CLI for this module
36 - [string-length](https://github.com/sindresorhus/string-length) - Get the real length of a string
37 - [widest-line](https://github.com/sindresorhus/widest-line) - Get the visual width of the widest line in a string
42 MIT © [Sindre Sorhus](https://sindresorhus.com)