删除分区中的最后一个元素[JavaScript]

let partition = [1, 2, 3, 4, 5];
let lastElement = partition.pop();
console.log(partition); // 输出 [1, 2, 3, 4]
console.log(lastElement); // 输出 5

let partition = [1, 2, 3, 4, 5];
let lastElement = partition.splice(partition.length - 1, 1);
console.log(partition); // 输出 [1, 2, 3, 4]
console.log(lastElement); // 输出 [5]