js字符串反转

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        var arr='my name is chaingongfu';
        var str=''
        for(var i=0;i<arr.length;i++){
            var s=arr.charAt(arr.length-i-1);
            str+=s;
        }
        console.log(str);
    </script>
</body>
</html>
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原文地址：https://www.cnblogs.com/cengzhuquan/p/13953194.html