The Internet's favorite JavaScript syntax highlighter supporting Node.js and the web.

  • 192 languages and 512 themes
  • Automatic language detection
  • Works with any HTML markup
  • Zero dependencies
  • Compatible with any JS framework
  • Supports Node.js and Deno

Current release: 11.11.1

#!/bin/bash ###### CONFIG ACCEPTED_HOSTS="/root/.hag_accepted.conf" BE_VERBOSE=false if [ "$UID" -ne 0 ] then echo "Superuser rights required" exit 2 fi genApacheConf(){ echo -e "# Host ${HOME_DIR}$1/$2 :" } echo '"quoted"' | tr -d \" > text.txtLanguage:Bash

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Usage

highlight.js can be used in different ways such using CDNs, hosting the bundle yourself, as a Vue plug-in, as ES6 modules, with Node.js, and web workers.

See our README on GitHub for more details.

As a Module

Highlight.js can be used with Node on the server. The first step is to install the package from npm:

npm install highlight.js # or yarn add highlight.jsLanguage:Bash

Now, it's possible to use the library using either require or import. By default, when you import the main package, all 192 languages will be loaded automatically.

// Using require const hljs = require('highlight.js'); // Using ES6 import syntax import hljs from 'highlight.js';Language:JavaScript

However, importing all our languages will increase the size of your bundle. If you only need a few languages, you can import them individually:

// Using require const hljs = require('highlight.js/lib/core'); // Load any languages you need hljs.registerLanguage('javascript', require('highlight.js/lib/languages/javascript'));Language:JavaScript
// Using ES6 import syntax import hljs from 'highlight.js/lib/core'; import javascript from 'highlight.js/lib/languages/javascript'; // Then register the languages you need hljs.registerLanguage('javascript', javascript);Language:JavaScript

And finally, regardless of how you imported the library, you can highlight code with the highlight or highlightAuto functions:

const highlightedCode = hljs.highlight( '<span>Hello World!</span>', { language: 'xml' } ).valueLanguage:JavaScript

For more details, see the "Importing the Library" section of our README.

As HTML Tags

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.11.1/styles/default.min.css"> <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.11.1/highlight.min.js"></script> <!-- and it's easy to individually load additional languages --> <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.11.1/languages/go.min.js"></script> <script>hljs.highlightAll();</script>Language:HTML, XML

This will find and highlight code inside <pre><code> tags; it tries to detect the language automatically. If automatic detection does not work for you, you can specify the language in the class attribute:

<pre><code class="language-html">...</code></pre>Language:HTML, XML