Ajax抽奖程序

var xmlHttp;

var data="";

var datalist=new Array();

var num=0;

var loop=0;

function getOption()

{

try

{

xmlHttp=new XMLHttpRequest();// Firefox, Opera 8.0+, Safari

}

catch (e)

{

// Internet Explorer

try

{

xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");

}

catch (e)

{

try

{

xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");

}

catch (e)

{

alert("您的浏览器版本太低,不支持AJAX！");

return false;

}

var url = "code.aspx";

xmlHttp.onreadystatechange = getvalue;

xmlHttp.open("GET",url,true);

xmlHttp.send(null);

}

function getvalue()

{

if (xmlHttp.readyState==4)

{

var response;

response = xmlHttp.responseText

data = response.split("@@");

num = data.length -1 ;

}

var timer

function change(){

document.getElementById("oknum").value = data[GetRnd(0,num)];

}

function start(){

clearInterval(timer);

timer = setInterval('change()',10); //50（毫秒）为变换间隔，越小变换的越快

}

function ok(){

clearInterval(timer);

}

function GetRnd(min,max){

return parseInt(Math.random()*(max-min+1));

}

</script>

//前台html

开始(<U>S</U>)</button> <button onclick="ok()" accesskey="o" type="button">停止(<U>O</U>)</button>

</body>

posted on 2008-09-23 14:17 Soso729 阅读(657) 评论(1) 收藏举报

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