[TOC] ## **数组的克隆（深拷贝）的方法** ### 方法一：forEach ~~~ var temp = []; var a = [1,2,3,4,5]; a.forEach(item=>{   temp.push(item) }) console.log(temp) ~~~ ### 方法二：concat ~~~ var a = [1,2,3,4,5] var b = [].concat(a); console.log(b); ~~~ ### 方法三：slice切割数组 ~~~ var a = [1,2,3,4,5]; var b = a.slice(0); console.log(b); ~~~ ### 方法四：...展开语法 ~~~ var a = [1,2,3,4,5]; var b = [...a]; console.log(b); ~~~ ~~~ var a = [1,2,3,4,5]; var temp =[]; temp.push(...a); console.log(temp) ~~~