随机点名程序（此程序在IE7中通过测试）
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>js中的Math对象</title>
<script type="text/javascript">
var users=new Array;
var flag=false;
function choiceUser()
{
var arr=["蔺武鹏","窦伟涛","张杰","汪军","徐鹏","王维","曹海矫","原帅"];
var index=Math.floor(Math.random()*8);
users.push(arr[index]);
var str="<center>";
str=str+"<table border=\"1\" width='600' height='360' style='border-collapse:collapse' bordercolor='#006699'>";
str=str+"<tr bgcolor='#006699'><td align='center' colspan='3'>中培点名</td></tr>";
str=str+"<tr><td width='50'>序号</td><td width='200'>姓名</td><td>备注</td></tr>";
//通过循环把学生姓名显示在表中
for(var i=1;i<=arr.length;i++)
{
flag=false;
str=str+"<tr>";
for(var k=0;k<users.length;k++)
{
if(arr[i-1]==users[k])
{
flag=true;
break;
}
}
if(flag)
{
str=str+"<td width='50'>"+i+"</td><td width='200'><font color='red'>"+arr[i-1]+"</font></td><td>已点名</td>";
}
else
{
str=str+"<td width='50'>"+i+"</td><td width='200'>"+arr[i-1]+"</td><td>未点名</td>";
}
str=str+"</tr>";
}
str=str+"</table>";
str=str+"</center>";
div1.innerHTML=str;
}
</script>
</head>
<body>
<div onclick="choiceUser()">
开始点名
</div>
<div id="div1">
</div>
</body>
</html>