问题：

返回一个数组被截断n个元素后还剩余的元素，从索引0开始截断。

解答：

function slasher(arr, howMany) {// it doesn't always pay to be first    var arrLength = arr.length;    var spliceLength = arrLength - howMany;    var spliceArr;        spliceArr = arr.splice(howMany, spliceLength);        return spliceArr;}slasher([1, 2, 3], 2);

链接：

https://www.w3cschool.cn/code...