## 翻转数组 （1）`reverse（）` ~~~ console.log(arr.reverse()); ~~~ （2）遍历 ~~~ var c = new Array(1, 2, 3, 4, 5); var res = new Array(); for (i = c.length - 1; i >= 0; i--) { res.push(c[i]); } console.log(res); ~~~