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firstCodePoint

Return the first n Unicode code points of a string.

Installation

npm install @stdlib/string-base-first-code-point

Alternatively,

• To load the package in a website via a script tag without installation and bundlers, use the ES Module available on the esm branch (see README).
• If you are using Deno, visit the deno branch (see README for usage intructions).
• For use in Observable, or in browser/node environments, use the Universal Module Definition (UMD) build available on the umd branch (see README).

The branches.md file summarizes the available branches and displays a diagram illustrating their relationships.

To view installation and usage instructions specific to each branch build, be sure to explicitly navigate to the respective README files on each branch, as linked to above.

Usage

var firstCodePoint = require( '@stdlib/string-base-first-code-point' );

firstCodePoint( str, n )

Returns the first n Unicode code points of a string.

var out = firstCodePoint( 'last man standing', 1 );
// returns 'l'

out = firstCodePoint( 'Hidden Treasures', 1 );
// returns 'H'

out = firstCodePoint( 'foo bar', 5 );
// returns 'foo b'

out = firstCodePoint( 'foo bar', 10 );
// returns 'foo bar'

Examples

var firstCodePoint = require( '@stdlib/string-base-first-code-point' );

var str = firstCodePoint( 'presidential election', 1 );
// returns 'p'

str = firstCodePoint( 'JavaScript', 1 );
// returns 'J'

str = firstCodePoint( 'The Last of the Mohicans', 5 );
// returns 'The L'

str = firstCodePoint( 'अनुच्छेद', 1 );
// returns 'अ'

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See Also

• @stdlib/string-base/first: return the first UTF-16 code unit of a string.
• @stdlib/string-base/first-grapheme-cluster: return the first grapheme cluster (i.e., user-perceived character) of a string.
• @stdlib/string-base/last-code-point: return the last Unicode code point of a string.
• @stdlib/string-base/remove-first-code-point: remove the first Unicode code point of a string.
• @stdlib/string-first: return the first character(s) of a string.

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Notice

This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.

Community

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License

See LICENSE.

Copyright

Copyright © 2016-2025. The Stdlib Authors.