26 lines
731 B
Markdown
26 lines
731 B
Markdown
---
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title: Find closest matching node
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tags: browser
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expertise: intermediate
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firstSeen: 2021-04-22T08:45:39+03:00
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lastUpdated: 2021-04-22T08:45:39+03:00
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---
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Finds the closest matching node starting at the given `node`.
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- Use a `for` loop and `Node.parentNode` to traverse the node tree upwards from the given `node`.
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- Use `Element.matches()` to check if any given element node matches the provided `selector`.
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- If no matching node is found, return `null`.
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```js
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const findClosestMatchingNode = (node, selector) => {
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for (let n = node; n.parentNode; n = n.parentNode)
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if (n.matches && n.matches(selector)) return n;
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return null;
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};
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```
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```js
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findClosestMatchingNode(document.querySelector('span'), 'body'); // body
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```
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