23 lines
566 B
Markdown
23 lines
566 B
Markdown
---
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title: Test if any array element is truthy
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type: snippet
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language: javascript
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tags: [array]
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cover: basket-paper
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dateModified: 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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