你的位置:首页 > Java教程

[Java教程]随机数两种方法


今天做阿里前端笔试,做到了随机数,是一道挺基础的题,但平时很少接触到这个,考试时间紧迫,自己基础也不牢固,没好好写出来,现在有重新码一遍,也加深自己的印象,作为第一篇在博客园安家落户的随笔

<!doctype html>
<html lang="zh-cn">
<head>
<meta charset="UTF-8">
<title>随机数</title>
<script type="text/javascript">
function GetRandomNum(Min,Max){
var Range=Max-Min;
var Rand=Math.random();
return(Min+Math.round(Rand*Range));

}
var num=GetRandomNum(1,10);
//document.write(num);
alert(num);

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'];

function generateMixed(n) {
var res = "";
for(var i = 0; i < n ; i ++) {
var id = Math.ceil(Math.random()*35);
res += chars[id];
}
return res;
}
</script>
</head>
<body>

</body>
</html>