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findLast javascript Code Snippet in 2024

arraybeginner

Last Updated: 15 February 2024

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

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