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javaScript生成32位随机数

2016-04-01 14:23 441 查看
<html>
<head>
<title></title>
<META http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script type="text/javascript">
function getNum(){
var chars = ['0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'];
var nums="";
for(var i=0;i<32;i++){
var id = parseInt(Math.random()*61);
nums+=chars[id];
}
return nums;
}
</script>
</head>
<body style="margin-left:100px;">
<div id="num">32位随机数</div>
<script type="text/javascript">
document.getElementById("num").innerHTML=getNum();
</script>
</body>
</html>

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