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30-seconds-of-code/snippets/any.md
Mathias Bynens 8ee50178f3 Avoid confusing prototype methods for static methods
Correct: `Array.from()` (it’s a static method)
Incorrect: `Array.join()` (doesn’t exist; it’s a prototype method)

This patch uses the common `#` syntax to denote `.prototype.`.
2018-09-28 15:44:12 -04:00

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Markdown

### any
Returns `true` if the provided predicate function returns `true` for at least one element in a collection, `false` otherwise.
Use `Array.prototype.some()` to test if any elements in the collection return `true` based on `fn`.
Omit the second argument, `fn`, to use `Boolean` as a default.
```js
const any = (arr, fn = Boolean) => arr.some(fn);
```
```js
any([0, 1, 2, 0], x => x >= 2); // true
any([0, 0, 1, 0]); // true
```