Percent-encode a UTF-16 encoded string according to RFC 3986.
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> [Percent-encode][percent-encoding] a [UTF-16][utf-16] encoded string according to [RFC 3986][rfc-3986-percent-encoding].
``bash`
npm install @stdlib/string-percent-encode
`javascript`
var percentEncode = require( '@stdlib/string-percent-encode' );
#### percentEncode( str )
[Percent-encodes][percent-encoding] a [UTF-16][utf-16] encoded string according to [RFC 3986][rfc-3986-percent-encoding].
`javascript`
var out = percentEncode( '☃' );
// returns '%E2%98%83'
- The function [percent-encodes][percent-encoding] an entire string. Hence, if provided a URI, the function [percent-encodes][percent-encoding] the entire URI.
`javascript`
var out = percentEncode( 'https://en.wikipedia.org/wiki/Mode_(statistics)' );
// returns 'https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FMode_%28statistics%29'
To [percent-encode][percent-encoding] a URI, split the URI into separate components, [percent-encode][percent-encoding] relevant components, and then reassemble.
`javascript
var percentEncode = require( '@stdlib/string-percent-encode' );
var values = [
'Ladies + Gentlemen',
'An encoded string!',
'Dogs, Cats & Mice',
'☃',
'æ',
'𐐷'
];
var i;
for ( i = 0; i < values.length; i++ ) {
console.log( '%s: %s', values[ i ], percentEncode( values[ i ] ) );
}
`
- [@stdlib/string-percent-encode-cli][@stdlib/string-percent-encode-cli]: CLI package for use as a command-line utility.
*
This package is part of [stdlib][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][stdlib], see the main project [repository][stdlib].
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---
See [LICENSE][stdlib-license].
Copyright © 2016-2026. The Stdlib [Authors][stdlib-authors].
[@stdlib/string-percent-encode-cli]: https://www.npmjs.com/package/@stdlib/string-percent-encode-cli
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[npm-url]: https://npmjs.org/package/@stdlib/string-percent-encode
[test-image]: https://github.com/stdlib-js/string-percent-encode/actions/workflows/test.yml/badge.svg?branch=v0.2.3
[test-url]: https://github.com/stdlib-js/string-percent-encode/actions/workflows/test.yml?query=branch:v0.2.3
[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/string-percent-encode/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/string-percent-encode?branch=main
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[stdlib]: https://github.com/stdlib-js/stdlib
[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors
[cli-section]: https://github.com/stdlib-js/string-percent-encode#cli
[cli-url]: https://github.com/stdlib-js/string-percent-encode/tree/cli
[@stdlib/string-percent-encode]: https://github.com/stdlib-js/string-percent-encode/tree/main
[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules
[deno-url]: https://github.com/stdlib-js/string-percent-encode/tree/deno
[deno-readme]: https://github.com/stdlib-js/string-percent-encode/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/string-percent-encode/tree/umd
[umd-readme]: https://github.com/stdlib-js/string-percent-encode/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/string-percent-encode/tree/esm
[esm-readme]: https://github.com/stdlib-js/string-percent-encode/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/string-percent-encode/blob/main/branches.md
[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/string-percent-encode/main/LICENSE
[percent-encoding]: https://en.wikipedia.org/wiki/Percent-encoding
[rfc-3986-percent-encoding]: https://tools.ietf.org/html/rfc3986#section-2.1
[utf-16]: https://en.wikipedia.org/wiki/UTF-16
[standard-streams]: https://en.wikipedia.org/wiki/Standard_streams