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annotate katex/contrib/mathtex-script-type.mjs @ 8:4a25b534c81c javascript-experiment

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Add v8 engine and include katex
author Jonatan Werpers <jonatan@werpers.com>
date Wed, 17 Jun 2020 21:43:52 +0200
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4a25b534c81c Add v8 engine and include katex
Jonatan Werpers <jonatan@werpers.com>
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1 import katex from '../katex.mjs';
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2
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3 let scripts = document.body.getElementsByTagName("script");
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4 scripts = Array.prototype.slice.call(scripts);
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5 scripts.forEach(function (script) {
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6 if (!script.type || !script.type.match(/math\/tex/i)) {
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7 return -1;
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8 }
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9
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10 const display = script.type.match(/mode\s*=\s*display(;|\s|\n|$)/) != null;
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11 const katexElement = document.createElement(display ? "div" : "span");
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12 katexElement.setAttribute("class", display ? "equation" : "inline-equation");
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13
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14 try {
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15 katex.render(script.text, katexElement, {
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16 displayMode: display
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17 });
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18 } catch (err) {
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19 //console.error(err); linter doesn't like this
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20 katexElement.textContent = script.text;
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21 }
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22
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23 script.parentNode.replaceChild(katexElement, script);
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24 });