console.log("aevb".split("").sort("")); //["a", "b", "e", "v"]
console.log("aevb".split("").revese("")); //["b", "v", "e", "a"]
问题来了，为何倒序的时候不是["v", "e", "b", "a"]而是["b", "v", "e", "a"]！求解！
请仔细看下数组的排序和倒置方法
https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Array/sort
https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Array/reverse
PS: 1k 分也能问出这种问题。。。。
因为你没有排序(sort)呀.