30-seconds-of-code
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A collection of useful JavaScript snippets.
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Markdown
### elementContains
Returns `true` if the `parent` element contains the `child` element, `false` otherwise.
Check that `parent` is not the same element as `child`, use `parent.contains(child)` to check if the `parent` element contains the `child` element.
```js
const elementContains = (parent, child) => parent !== child && parent.contains(child);
```
```js
elementContains(document.querySelector('head'), document.querySelector('title')); // true
elementContains(document.querySelector('body'), document.querySelector('body')); // false
```