<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title></title>
</head>
<body>
<script>
function Reverse(str)
{
var arr =[];
for(var i=str.length-1;i>=0;i--)
{
arr.push(str[i]);
}
return arr.join("");
}
document.write(Reverse('hello world'));
document.write("<br />");
//第二种方法
var reverse = function(str1){
return str1.split('').reverse().join('');
};
document.write(reverse("welcome to Xinhua"));
</script>
</body>
</html>