Returns 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, Array.prototype.pop() to get the last one.

代码片段

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

使用样例

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