Files
30-seconds-of-code/snippets/allBy.md
2018-02-14 11:46:15 +02:00

14 lines
321 B
Markdown

### allBy
Returns `true` if the provided predicate function returns `true` for all elements in a collection, `false` otherwise.
Use `Array.every()` to test if all elements in the collection return `true` based on `fn`.
```js
const allBy = (arr, fn) => arr.every(fn);
```
```js
allBy([4,2,3], x => x > 1); // true
```