将数组拼接成两半，无论大小? [英] Splice an array in half, no matter the size?

问题描述

我有一个数组，我想分成两半.所以我可以将前半部分放在右侧，将后半部分放在左侧.

I have an array I would like to split in half. So I can position the first half on the right side and the second half on the left side.

我之前用过拼接功能:

var leftSide = arrayName.splice(0,2);

但不知道如何将其拼接成一半大小，因为数组的大小会动态变化.

But not sure how to splice it in half no matter the size, because the array will change in size dynamically.

推荐答案

var half_length = Math.ceil(arrayName.length / 2);    

var leftSide = arrayName.splice(0,half_length);

在轨道评论中编辑@Lightness Races 后的代码

edited the code following @Lightness Races in Orbit comment

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