javascript - 如何从数组中获取子数组？(How to get subarray from array?)

Question

我有var ar = [1, 2, 3, 4, 5]并且想要一些函数getSubarray(array, fromIndex, toIndex) ，调用getSubarray(ar, 1, 3)是新数组[2, 3, 4] 。

  ask by Sergey Metlov translate from so

Answer 1

Take a look at Array.slice(begin, end)(看一下Array.slice(begin, end))

 const ar = [1, 2, 3, 4, 5]; // slice from 1..3 - add 1 as the end index is not included const ar2 = ar.slice(1, 3 + 1); console.log(ar2);