30-seconds-of-code
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A collection of useful JavaScript snippets.
18 lines (13 loc) • 450 B
Markdown
### forEachRight
Executes a provided function once for each array element, starting from the array's last element.
Use `Array.slice(0)` to clone the given array, `Array.reverse()` to reverse it and `Array.forEach()` to iterate over the reversed array.
```js
const forEachRight = (arr, callback) =>
arr
.slice(0)
.reverse()
.forEach(callback);
```
```js
forEachRight([1, 2, 3, 4], val => console.log(val)); // '4', '3', '2', '1'
```