40 lines
1.1 KiB
JavaScript
40 lines
1.1 KiB
JavaScript
import $ from 'jquery';
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import { __ } from '~/locale';
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import flash from '~/flash';
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// Renders math using KaTeX in any element with the
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// `js-render-math` class
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//
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// ### Example Markup
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//
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// <code class="js-render-math"></div>
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//
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// Loop over all math elements and render math
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function renderWithKaTeX(elements, katex) {
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elements.each(function katexElementsLoop() {
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const mathNode = $('<span></span>');
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const $this = $(this);
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const display = $this.attr('data-math-style') === 'display';
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try {
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katex.render($this.text(), mathNode.get(0), { displayMode: display, throwOnError: false });
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mathNode.insertAfter($this);
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$this.remove();
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} catch (err) {
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throw err;
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}
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});
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}
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export default function renderMath($els) {
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if (!$els.length) return;
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Promise.all([
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import(/* webpackChunkName: 'katex' */ 'katex'),
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import(/* webpackChunkName: 'katex' */ 'katex/dist/katex.min.css'),
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])
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.then(([katex]) => {
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renderWithKaTeX($els, katex);
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})
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.catch(() => flash(__('An error occurred while rendering KaTeX')));
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}
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