<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
<meta http-equiv="Content-Language" content="zh-CN"/>
<title>M.I.T. Talk 抽奖</title>
<script type="text/javascript" src="/js/2011/jquery-1.5.1.min.js"></script>
<style type="text/css">
body {text-align:center;padding-top:50px;}
#Result {border:3px solid #40AA53;margin:0 auto;text-align:center;400px;padding:50px 0;background:#efe;}
#ResultNum {font-size:50pt;font-family:Verdana}
#Button {margin:50px 0 0 0;}
#Button input {font-size:40px;padding:0 50px;}
</style>
<script type='text/javascript'>
<!--
var g_Interval = 10;
var g_PersonCount = 100;//参加抽奖人数
var g_Timer;
var running = false;
function beginRndNum(trigger){
if(running){
running = false;
clearTimeout(g_Timer);
$(trigger).val("开始");
$('#ResultNum').css('color','red');
}
else{
running = true;
$('#ResultNum').css('color','black');
$(trigger).val("停止");
beginTimer();
}
}
function updateRndNum(){
var num = Math.floor(Math.random()*g_PersonCount+1);
$('#ResultNum').html(num);
}
function beginTimer(){
g_Timer = setTimeout(beat, g_Interval);
}
function beat() {
g_Timer = setTimeout(beat, g_Interval);
updateRndNum();
}
//-->
</script>
</head>
<body>
<h1>抽奖结果</h1>
<div id="Result">
<span id="ResultNum">0</span>
</div>
<div id="Button">
<input type='button' value='开始' onclick='beginRndNum(this)'/>
</div>
</body>
</html>
在线演示：
http://www.oschina.net/r.html