JS-抽奖系统-实现原理

<meta charset="UTF-8">

<title>抽奖系统</title>
<style type="text/css">

.wrap {
width: 300px;
margin: 20px auto;
text-align: center;
}

.box {
padding: 10px;
color: red;
font: bold 24px "微软雅黑";
border: 1px solid #FF7F50;
color: red;
margin: 20px auto;
}

input[type="button"] {
border: 1px solid #DC143C;
background-color: #FF6600;
padding: 5px 12px;
font: bold 16px "微软雅黑";
color: white;
cursor: pointer;
}

.box,
input[type="button"] {
-webkit-border-radius: 11px;
-moz-border-radius: 11px;
border-radius: 11px;
}

input[type="button"].play {
background-color: brown;
border: 1px solid darkred;
}

style