cd9bca4a89
Summary: Add an auto-render extension to render math on a page. It exposes a global function (maybe we should attach it to `katex`?) to render math in an element. It comes with a README on how to use it. Also, make `make build` build the minified file. Fixes #26 Test Plan: - Visit http://localhost:7936/contrib/auto-render/ - See that all of the math renders correctly - `make test` Reviewers: alpert, kevinb Reviewed By: kevinb Differential Revision: https://phabricator.khanacademy.org/D16620
64 lines
1.7 KiB
Markdown
64 lines
1.7 KiB
Markdown
# Auto-render extension
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This is an extension to automatically render all of the math inside of text. It
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searches all of the text nodes in a given element for the given delimiters, and
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renders the math in place.
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### Usage
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This extension isn't part of KaTeX proper, so the script should be separately
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included in the page:
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```html
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<script src="/path/to/auto-render.min.js"></script>
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```
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Then, call the exposed `renderMathInElement` function in a script tag
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before the close body tag:
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```html
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<body>
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...
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<script>
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renderMathInElement(document.body);
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</script>
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</body>
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```
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See [index.html](index.html) for an example.
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### API
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This extension exposes a single function, `window.renderMathInElement`, with
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the following API:
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```js
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function renderMathInElement(elem, options)
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```
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`elem` is an HTML DOM element. The function will recursively search for text
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nodes inside this element and render the math in them.
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`options` is an optional object argument with the following keys:
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- `delimiters`: This is a list of delimiters to look for math. Each delimiter
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has three properties:
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- `left`: A string which starts the math expression (i.e. the left delimiter).
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- `right`: A string which ends the math expression (i.e. the right delimiter).
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- `display`: A boolean of whether the math in the expression should be
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rendered in display mode or not.
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The default value is:
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```js
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[
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{left: "$$", right: "$$", display: true},
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{left: "\\[", right: "\\]", display: true},
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{left: "\\(", right: "\\)", display: false}
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]
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```
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- `ignoredTags`: This is a list of DOM node types to ignore when recursing
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through. The default value is
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`["script", "noscript", "style", "textarea", "pre", "code"]`.
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