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

title, tags, expertise, cover, firstSeen, lastUpdated

title	tags	expertise	cover	firstSeen	lastUpdated
Find last matching value	array	beginner	blog_images/misty-mountains.jpg	2018-01-11T13:51:58+02:00	2020-10-22T20:23:47+03:00

Finds the last element for which the provided function returns a truthy value.

• Use Array.prototype.filter() to remove elements for which fn returns falsy values.
• Use Array.prototype.pop() to get the last element in the filtered array.

const findLast = (arr, fn) => arr.filter(fn).pop();

findLast([1, 2, 3, 4], n => n % 2 === 1); // 3