JS实现字符串翻转的方法分析

1. 字符串的完全翻转:

function reverseStr(param){
var arr = param.split(" ");
var newArr = [];
for(i=0;i<arr.length;i++){
newArr[arr.length-i] = arr[i];
}
return newArr.join(" ");
}
document.write(reverseStr("smile at life"));

结果：efil ta elims

2. 翻转字符串中单词顺序,但单词字母顺序不变:

function reverseStr(param){
var arr = param.split(" ");
var newArr = [];
for(i=0;i<arr.length;i++){
newArr[arr.length-i] = arr[i];
}
return newArr.join(" ");
}
document.write(reverseStr("smile at life"));

结果：life at smile