JS编写的抽奖程序,该怎么解决

2012-03-09

JS编写的抽奖程序公司要开年会了,我这里要做个抽奖程序,我一直没怎么接触过JS,憋了半天,憋出个这样的程序:

JS编写的抽奖程序
公司要开年会了,我这里要做个抽奖程序,我一直没怎么接触过JS,憋了半天,憋出个这样的程序:
<html>
<head>
<title> Untitled Document </title>
<meta http-equiv= "Content-Type " content= "text/html; charset=gb2312 ">
<style type= "text/css ">

</style>
</head>
<script language= "javascript ">
var con= 'start ';

function showme(){
if (con== 'start ')
{document.form.textfield.value= '0 ' + Math.round(Math.random()*500);
timeid=setTimeout( 'showme() ',50);}
}

function startshowme(){
con= 'start ';
showme();
}

function stopshowme(){
con= 'stop ';
}
</script>
<body>
<p>   </p>
<p> <br>
</p>
<table width= "100% " border= "0 " align= "center " cellpadding= "0 " cellspacing= "0 ">
<tr>
<td align= "center "> <form name= "form " method= "post " action= " ">
<input name= "textfield " type= "text " class= "unnamed1 " onFocus= "this.blur() " size= "30 ">
</form> </td>
</tr>
<tr>
<td align= "center "> <input type= "button " name= "Button " value= "开始 " onClick= "startshowme() "> 　　
<input type= "button " name= "Button " value= "终止 " onClick= "stopshowme() "> </td>
</tr>
</table>
</body>
</html>

现在有这样的问题想请教各位
1.抽过的号码不能重复
2.数字一直保持在3位,比如001,020,140这样的
由于比较急,所以希望各位能给出代码谢谢了

[解决办法]
<html>
<head>
<title> Untitled Document </title>
<meta http-equiv= "Content-Type " content= "text/html; charset=gb2312 ">
<style type= "text/css ">

</style>
</head>
<script language= "javascript ">
var con= 'start ';
var value = 0;
var valueArray = new Array();

function showme() {

if (con== 'start ') {

do {
value = Math.round(Math.random()*4 + 1);

if ( value < 10 )
value = "00 " + value;

if ( value < 100 )
value = "0 " + value;
}
while ( valueArray[value] )

try
----------------------------
<style type= "text/css ">

</style>
</head>
<script language= "javascript ">

var intl;

function loop(){
var str = '00 ' + parseInt(Math.random()*500);
str = str.substring(str.length-3,str.length);
d1.innerText = str;
return str;
}

function Start(){
intl = window.setInterval( "loop(); ",10);
}

function stop(){
if(d2.innerHTML.indexOf(d1.innerText) <0){
d2.innerHTML += d1.innerText + " <br> ";
}
else{
while(d2.innerHTML.indexOf(loop1()) <0){
d2.innerHTML += d1.innerText + " <br> ";
}
}
window.clearInterval(intl);
}

</script>

<div id= "d1 "> </div>
<input type= "button " name= "Button " value= "开始 " onClick= "Start() "> 　　
<input type= "button " name= "Button " value= "终止 " onClick= "stop() ">
结果：
<div id= "d2 "> </div>

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JS编写的抽奖程序,该怎么解决