22 lines
581 B
Markdown
22 lines
581 B
Markdown
---
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title: Test if any array element is truthy
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tags: array
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cover: blog_images/basket-paper.jpg
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firstSeen: 2018-02-14T11:46:15+02:00
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lastUpdated: 2020-10-18T20:24:28+03:00
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---
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Checks if the provided predicate function returns `true` for at least one element in a collection.
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- Use `Array.prototype.some()` to test if any elements in the collection return `true` based on `fn`.
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- Omit the second argument, `fn`, to use `Boolean` as a default.
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```js
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const any = (arr, fn = Boolean) => arr.some(fn);
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```
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```js
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any([0, 1, 2, 0], x => x >= 2); // true
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any([0, 0, 1, 0]); // true
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```
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