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