PHP——动态随机数

取1-13随机数

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>

<body>
<div id="suiji"></div>
<input type="button" value="开始" onclick="showname()" />
</body>
<script type="text/javascript">

var arr=new Array("1","2","3","4","5","6","7","8","9","10","11","12","13");
var bs=0;
function showname()
{
    var bian=Math.floor(Math.random() * 13);
    var s = document.getElementById("suiji");
    s.innerText = arr[bian];
    bs=bs+1;
    if(bs==30)
    {
        window.clearTimeout(jian);
        }
    else
    {
        var jian=window.setTimeout("showname()",30);
        }
    
    
}
</script>
</html>

 

posted on 2016-02-17 23:41  Chen_s  阅读(222)  评论(0)  编辑  收藏  举报

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