19 lines
474 B
Markdown
19 lines
474 B
Markdown
---
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title: insertBefore
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tags: browser,beginner
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---
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Inserts an HTML string before the start of the specified element.
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- Use `Element.insertAdjacentHTML()` with a position of `'beforebegin'` to parse `htmlString` and insert it before the start of `el`.
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```js
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const insertBefore = (el, htmlString) =>
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el.insertAdjacentHTML('beforebegin', htmlString);
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```
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```js
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insertBefore(document.getElementById('myId'), '<p>before</p>');
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// <p>before</p> <div id="myId">...</div>
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```
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