1、base64加密

在页面中引入base64.js文件，调用方法为：



<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>base64加密</title>
<script type="text/javascript" src="base64.js"></script>
<script type="text/javascript">  
        var b = new Base64();  
        var str = b.encode("admin:admin");  
        alert("base64 encode:" + str);  
　　　　　//解密
        str = b.decode(str);  
        alert("base64 decode:" + str);  
</script>  
</head>

<body>
</body>
</html>



2、md5加密

在页面中引用md5.js文件，调用方法为



<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>md5加密</title>
<script type="text/ecmascript" src="md5.js"></script>
<script type="text/javascript">  
  var hash = hex_md5("123dafd");
    alert(hash)
</script>  
</head>

<body>
</body>
</html>



3、sha1加密

据说这是最安全的加密

页面中引入sha1.js，调用方法为



<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>sha1加密</title>
<script type="text/ecmascript" src="sha1.js"></script>
<script type="text/javascript">
  var sha = hex_sha1('mima123465')
    alert(sha)   
</script>  
</head>

<body>
</body>
</html>
 function encryptionCode(str){  
    var len=str.length;  
    var rs="";  
    for(var i=0;i<len;i++){  
           var k=str.substring(i,i+1);  
           rs+= (i==0?"":",")+str.charCodeAt(i);  
    }  
    return rs;  
 }  //解密  function unEncryptionCode(str){  
    var k=str.split(",");  
    var rs="";  
    for(var i=0;i<k.length;i++){  
       rs+=String.fromCharCode(k[i]);  
    }  
    return rs;  
 }