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51 lines
2.0 KiB
Markdown
51 lines
2.0 KiB
Markdown
# [<img src="https://khan.github.io/KaTeX/katex-logo.svg" width="130" alt="KaTeX">](https://khan.github.io/KaTeX/) [](https://travis-ci.org/Khan/KaTeX)
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KaTeX is a fast, easy-to-use JavaScript library for TeX math rendering on the web.
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* **Fast:** KaTeX renders its math synchronously and doesn't need to reflow the page. See how it compares to a competitor in [this speed test](http://jsperf.com/katex-vs-mathjax/).
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* **Print quality:** KaTeX’s layout is based on Donald Knuth’s TeX, the gold standard for math typesetting.
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* **Self contained:** KaTeX has no dependencies and can easily be bundled with your website resources.
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* **Server side rendering:** KaTeX produces the same output regardless of browser or environment, so you can pre-render expressions using Node.js and send them as plain HTML.
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KaTeX supports all major browsers, including Chrome, Safari, Firefox, Opera, and IE 8 - IE 11.
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## Usage
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Download the built files from [the releases page](https://github.com/khan/katex/releases). Include the `katex.min.js` and `katex.min.css` files on your page:
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```html
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<link rel="stylesheet" href="/path/to/katex.min.css">
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<script src="/path/to/katex.min.js"></script>
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```
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Call `katex.render` with a TeX expression and a DOM element to render into:
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```js
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katex.render("c = \\pm\\sqrt{a^2 + b^2}", element);
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```
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To generate HTML on the server, you can use `katex.renderToString`:
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```js
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var html = katex.renderToString("c = \\pm\\sqrt{a^2 + b^2}");
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// '<span class="katex">...</span>'
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```
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Make sure to include the CSS and font files, but there is no need to include the JavaScript.
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These APIs default to inline math typesetting; for display math you can prepend `\displaystyle` ([#66](https://github.com/Khan/KaTeX/issues/66)):
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```js
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katex.render("\\displaystyle " + formula, element);
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// OR
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var html = katex.renderToString("\\displaystyle " + formula);
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```
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## Contributing
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See [CONTRIBUTING.md](CONTRIBUTING.md)
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## License
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KaTeX is licensed under the [MIT License](http://opensource.org/licenses/MIT).
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