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生成32位,16進位制的UUID

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>生成32位,16進位制的UUID</title>
</head>
<body bgcolor="#4395FF">
    <style>
#content{
color:#FF0;
text-align:center;
text-shadow:2px 2px 2px #0000FF,3px 3px 5px red;
}
.sty {
text-align:center;
cursor:pointer;
line-height:50px;
margin:0 auto;
width:50%;
background-color:#71D38C;
border-radius:5px;
color:#FFF;
font-size:30px;
font-weight:bold;
box-shadow:3px 3px 5px #333333;
text-shadow:2px 2px 2px #FAB702,3px 3px 3px #0000FF,3px 3px 3px #0F0;
}
    </style>
<script type="text/javascript">
function getUuid (len, radix) {
   var chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'.split('');
   var uuid = [], i;
   radix = radix || chars.length;
   if (len) {
     for (i = 0; i < len; i++) uuid[i] = chars[0 | Math.random()*radix];
   } else {
     var r;
     uuid[8] = uuid[13] = uuid[18] = uuid[23] = '-';
     uuid[14] = '4';
     for (i = 0; i < 36; i++) {
       if (!uuid[i]) {
         r = 0 | Math.random()*16;
         uuid[i] = chars[(i == 19) ? (r & 0x3) | 0x8 : r];
       }
     }
   }
   return uuid.join('');
};

function s(){
document.getElementById("content").innerText=getUuid(32,16);
}
</script>
        <h1 id="content"></h1>
        <div class="sty" onClick="s()">點選生成UUID</div>
</body>
</html>