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JS合并数组的几种方法及优劣比较

2024-04-08 05:30:03 418

本文属于JavaScript的基础技能.我们将学习结合/合并两个JS数组的各种常用方法,并比较各种方法的优缺点.

我们先来看看具体的场景:


varq=[5,5,1,9,9,6,4,5,8];

varb=["tie","mao","csdn","ren","fu","fei"];

很明显,数组q和b简单拼接的结果是:


[

   5,5,1,9,9,6,4,5,8,

   "tie","mao","csdn","ren","fu","fei"

]

concat(..)方法

最常见的用法如下:


varc=q.concat(b);

q;//[5,5,1,9,9,6,4,5,8] b;//["tie","mao","csdn","ren","fu","fei"];

c;//[5,5,1,9,9,6,4,5,8,"tie","mao","csdn","ren","fu","fei"]