Render katex code in marked
This is inline katex: $c = \\pm\\sqrt{a^2 + b^2}$
This is block level katex:
$$
c = \\pm\\sqrt{a^2 + b^2}
$$You will still need to include the css in your html document to allow katex styles.
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.8/dist/katex.min.css" integrity="sha384-GvrOXuhMATgEsSwCs4smul74iXGOixntILdUW9XmUC6+HX0sLNAK3q71HotJqlAn" crossorigin="anonymous">import {marked} from "marked";
import markedKatex from "marked-katex-extension";
// or in the browser
// <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@{version}/dist/katex.min.css" integrity="sha384-n8MVd4RsNIU0tAv4ct0nTaAbDJwPJzDEaqSD1odI+WdtXRGWt2kTvGFasHpSy3SV" crossorigin="anonymous">
// <script defer src="https://cdn.jsdelivr.net/npm/katex@{version}/dist/katex.min.js" integrity="sha384-XjKyOOlGwcjNTAIQHIpgOno0Hl1YQqzUOEleOLALmuqehneUG+vnGctmUb0ZY0l8" crossorigin="anonymous"></script>
// <script src="https://cdn.jsdelivr.net/npm/marked@{version}/lib/marked.umd.js"></script>
// <script src="https://cdn.jsdelivr.net/npm/marked-katex-extension@{version}/lib/index.umd.js"></script>
const options = {
throwOnError: false
};
marked.use(markedKatex(options));
marked.parse("katex: $c = \\pm\\sqrt{a^2 + b^2}$");
You can include newlines in block level katex. Block level katex must contain starting and ending delimiters on their own line.
marked.parse(`
$$
\\begin{array}{cc}
a & b \\\\
c & d
\\end{array}
$$
`);displayMode will be on by default when using two dollar signs ($$) in inline or block katex. And it will be off by default for a single dollar sign ($) in inline or block katex.
If you want to be able to parse mathematical formulas in non-standard markdown format, that is, without spaces before and after $ or $$, you can turn on the nonStandard option.
import {marked} from "marked";
import markedKatex from "marked-katex-extension";
const options = {
nonStandard: true
};
marked.use(markedKatex(options));
marked.parse(`
afdaf$x=x^2$4$x=x^2$
$$
x = x^2
$$
`);
Options are sent directly to katex