string-width

string-width

Get the visual width of a string - the number of columns required to display it

Some Unicode characters are fullwidth and use double the normal width.

Useful to be able to measure the actual width of command-line output.

Install

$ npm install --save string-width

Usage

var stringWidth = require('string-width');

stringWidth('古');
//=> 2

stringWidth('\u001b[1m古\u001b[22m');
//=> 2

stringWidth('a');
//=> 1

Related

• string-width-cli - CLI for this module
• string-length - Get the real length of a string

License

MIT © Sindre Sorhus

Similar packages

Other packages similar to string-width

wcwidth

The wcwidth package is similar to string-width in that it provides functionality to determine the number of terminal column cells a wide-character string will occupy. It is based on the wcwidth() function defined in POSIX.1-2001 and POSIX.1-2008 which is used in Unix-based systems.

eastasianwidth

This package is designed to provide the functionality to determine the East Asian Width property as defined by Unicode. It can be used to figure out if a character is full-width, half-width, wide, narrow, ambiguous, or neutral. This is similar to string-width but focuses specifically on East Asian characters.

string-pixel-width

While string-width calculates the number of columns a string will take up in a monospaced font, string-pixel-width calculates the width of a string in pixels. This is useful for determining the actual rendered width of a string in a web page or an application with proportional fonts.