mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-30 17:41:12 +00:00
153 lines
4.7 KiB
Markdown
153 lines
4.7 KiB
Markdown
This file was generated with pkgs/misc/documentation-highlighter/update.sh
|
||
|
||
# Highlight.js
|
||
|
||
[](https://travis-ci.org/isagalaev/highlight.js)
|
||
|
||
Highlight.js is a syntax highlighter written in JavaScript. It works in
|
||
the browser as well as on the server. It works with pretty much any
|
||
markup, doesn’t depend on any framework and has automatic language
|
||
detection.
|
||
|
||
## Getting Started
|
||
|
||
The bare minimum for using highlight.js on a web page is linking to the
|
||
library along with one of the styles and calling
|
||
[`initHighlightingOnLoad`][1]:
|
||
|
||
```html
|
||
<link rel="stylesheet" href="/path/to/styles/default.css">
|
||
<script src="/path/to/highlight.pack.js"></script>
|
||
<script>hljs.initHighlightingOnLoad();</script>
|
||
```
|
||
|
||
This will find and highlight code inside of `<pre><code>` tags; it tries
|
||
to detect the language automatically. If automatic detection doesn’t
|
||
work for you, you can specify the language in the `class` attribute:
|
||
|
||
```html
|
||
<pre><code class="html">...</code></pre>
|
||
```
|
||
|
||
The list of supported language classes is available in the [class
|
||
reference][2]. Classes can also be prefixed with either `language-` or
|
||
`lang-`.
|
||
|
||
To disable highlighting altogether use the `nohighlight` class:
|
||
|
||
```html
|
||
<pre><code class="nohighlight">...</code></pre>
|
||
```
|
||
|
||
## Custom Initialization
|
||
|
||
When you need a bit more control over the initialization of
|
||
highlight.js, you can use the [`highlightBlock`][3] and [`configure`][4]
|
||
functions. This allows you to control *what* to highlight and *when*.
|
||
|
||
Here’s an equivalent way to calling [`initHighlightingOnLoad`][1] using
|
||
jQuery:
|
||
|
||
```javascript
|
||
$(document).ready(function() {
|
||
$('pre code').each(function(i, block) {
|
||
hljs.highlightBlock(block);
|
||
});
|
||
});
|
||
```
|
||
|
||
You can use any tags instead of `<pre><code>` to mark up your code. If
|
||
you don't use a container that preserve line breaks you will need to
|
||
configure highlight.js to use the `<br>` tag:
|
||
|
||
```javascript
|
||
hljs.configure({useBR: true});
|
||
|
||
$('div.code').each(function(i, block) {
|
||
hljs.highlightBlock(block);
|
||
});
|
||
```
|
||
|
||
For other options refer to the documentation for [`configure`][4].
|
||
|
||
|
||
## Web Workers
|
||
|
||
You can run highlighting inside a web worker to avoid freezing the browser
|
||
window while dealing with very big chunks of code.
|
||
|
||
In your main script:
|
||
|
||
```javascript
|
||
addEventListener('load', function() {
|
||
var code = document.querySelector('#code');
|
||
var worker = new Worker('worker.js');
|
||
worker.onmessage = function(event) { code.innerHTML = event.data; }
|
||
worker.postMessage(code.textContent);
|
||
})
|
||
```
|
||
|
||
In worker.js:
|
||
|
||
```javascript
|
||
onmessage = function(event) {
|
||
importScripts('<path>/highlight.pack.js');
|
||
var result = self.hljs.highlightAuto(event.data);
|
||
postMessage(result.value);
|
||
}
|
||
```
|
||
|
||
|
||
## Getting the Library
|
||
|
||
You can get highlight.js as a hosted, or custom-build, browser script or
|
||
as a server module. Right out of the box the browser script supports
|
||
both AMD and CommonJS, so if you wish you can use RequireJS or
|
||
Browserify without having to build from source. The server module also
|
||
works perfectly fine with Browserify, but there is the option to use a
|
||
build specific to browsers rather than something meant for a server.
|
||
Head over to the [download page][5] for all the options.
|
||
|
||
**Don't link to GitHub directly.** The library is not supposed to work straight
|
||
from the source, it requires building. If none of the pre-packaged options
|
||
work for you refer to the [building documentation][6].
|
||
|
||
**The CDN-hosted package doesn't have all the languages.** Otherwise it'd be
|
||
too big. If you don't see the language you need in the ["Common" section][5],
|
||
it can be added manually:
|
||
|
||
```html
|
||
<script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.4.0/languages/go.min.js"></script>
|
||
```
|
||
|
||
**On Almond.** You need to use the optimizer to give the module a name. For
|
||
example:
|
||
|
||
```
|
||
r.js -o name=hljs paths.hljs=/path/to/highlight out=highlight.js
|
||
```
|
||
|
||
|
||
## License
|
||
|
||
Highlight.js is released under the BSD License. See [LICENSE][7] file
|
||
for details.
|
||
|
||
## Links
|
||
|
||
The official site for the library is at <https://highlightjs.org/>.
|
||
|
||
Further in-depth documentation for the API and other topics is at
|
||
<http://highlightjs.readthedocs.io/>.
|
||
|
||
Authors and contributors are listed in the [AUTHORS.en.txt][8] file.
|
||
|
||
[1]: http://highlightjs.readthedocs.io/en/latest/api.html#inithighlightingonload
|
||
[2]: http://highlightjs.readthedocs.io/en/latest/css-classes-reference.html
|
||
[3]: http://highlightjs.readthedocs.io/en/latest/api.html#highlightblock-block
|
||
[4]: http://highlightjs.readthedocs.io/en/latest/api.html#configure-options
|
||
[5]: https://highlightjs.org/download/
|
||
[6]: http://highlightjs.readthedocs.io/en/latest/building-testing.html
|
||
[7]: https://github.com/isagalaev/highlight.js/blob/master/LICENSE
|
||
[8]: https://github.com/isagalaev/highlight.js/blob/master/AUTHORS.en.txt
|