jQuery模拟福利彩票双色球机选.
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
*
{
margin: 0;
padding: 0;
}
div
{
width: 100px;
height: 100px;
border-radius: 50%;
background: red;
float: left;
margin-left: 10px;
box-shadow:2px 2px 2px 2px ;
position: relative;
}
span
{
width: 60px;
height: 60px;
background: white;
position: absolute;
left: 20px;
top: 20px;
text-align: center;
font-size: 50px;
font-weight: bold;
color: greenyellow;
}
#b1
{
background: linear-gradient(to top,blue,#fff);
box-shadow: 2px 2px 2px 2px blue;
}
button
{
width: 100px;
height: 50px;
position: relative;
left: -500px;
top: 120px;
}
</style>
</head>
<body>
<div><span></span></div>
<div><span></span></div>
<div><span></span></div>
<div><span></span></div>
<div><span></span></div>
<div><span></span></div>
<div id="b1"><span></span></div>
<button id="btn">机选一注</button>
<button id="btn1">清空</button>
</body>
<script type="text/javascript">
var ospan=document.getElementsByTagName('span');
var btn=document.getElementById('btn');
var btn1=document.getElementById('btn1');
btn.onclick=function()
{
var arr=[]
btn.disabled=true;
btn1.disabled=true;
reset()
while(arr.length<ospan.length)
{
var n=Math.floor(Math.random()*35+1);
var num=doit(n);
if(arr.indexOf(num)==-1)
{
arr.push(num)
}
}
// console.log(arr)
var i=0;
var s=setInterval(function()
{
ospan[i].innerHTML=arr[i]
i++;
if(i>=7)
{
clearInterval(s)
btn.disabled=false;
btn1.disabled=false;
}
},100)
}
function reset()
{
for (var i=0;i<ospan.length;i++)
{
ospan[i].innerHTML=""
}
}
btn1.onclick=function()
{
reset()
}
function doit(n)
{
if(n<10)
{
return"0"+n
}else
{
return n
}
}
</script>
</html> 
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