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Common highlighters with the Shadow DOM
source link: https://marco.dev/highlighters-shadow-dom
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Code Highlighters with the Shadow DOM
If your website uses the Shadow DOM / Web components and you want to highlight the code source in your webpage.
The common highlighters search the <code>
code tag in the javascript document
because of this your shadowed <code>
is not visible.
highlight.js
If you use highlight.js you have to call the function highlightBlock
in the code that generates your shadow DOM:
let blocks = this.shadowRoot.querySelectorAll('pre code');
for (let i = 0; i< blocks.length; i++) {
hljs.highlightBlock(blocks[i]);
prism.js
With prism.js you can pass the container reference:
Prism.highlightAllUnder(this.shadowRoot);
Author
Marco Molteni
Marco Molteni Blog
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