30-seconds-of-code/snippets/forEachRight.md

title, tags, expertise, cover, firstSeen, lastUpdated

title	tags	expertise	cover	firstSeen	lastUpdated
Execute function for each array element in reverse	array	intermediate	blog_images/interior-6.jpg	2018-01-09T01:38:50+02:00	2020-10-19T22:49:51+03:00

Executes a provided function once for each array element, starting from the array's last element.

• Use Array.prototype.slice() to clone the given array and Array.prototype.reverse() to reverse it.
• Use Array.prototype.forEach() to iterate over the reversed array.

const forEachRight = (arr, callback) =>
  arr
    .slice()
    .reverse()
    .forEach(callback);

forEachRight([1, 2, 3, 4], val => console.log(val)); // '4', '3', '2', '1'