21 lines
516 B
Markdown
21 lines
516 B
Markdown
---
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title: forEachRight
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tags: array,intermediate
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---
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Executes a provided function once for each array element, starting from the array's last element.
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- Use `Array.prototype.slice()` to clone the given array, `Array.prototype.reverse()` to reverse it and `Array.prototype.forEach()` to iterate over the reversed array.
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```js
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const forEachRight = (arr, callback) =>
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arr
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.slice()
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.reverse()
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.forEach(callback);
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```
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```js
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forEachRight([1, 2, 3, 4], val => console.log(val)); // '4', '3', '2', '1'
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```
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