8ee50178f3
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.`.
18 lines
480 B
Markdown
18 lines
480 B
Markdown
### forEachRight
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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(0)` 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(0)
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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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