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83 lines (83 loc) · 1.77 KB
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>随机抽奖</title>
<meta name="description" content="">
<meta name="keywords" content="">
<style type="text/css">
body,html{width: 100%;height: 100%;}
*{
padding: 0px;
margin: 0px;
font-size: 16px;
font-family: "Microsoft YaHei";
}
.radius{
width: 300px;
height: 300px;
margin: 100px auto;
position: relative;
}
.radius canvas{
position: absolute;
}
#canvas{
background-color: white;
border-radius: 100%;
}
#canvas1,#canvas3{
left: 50px;
top: 50px;
z-index: 30;
}
#canvas2{
left: 75px;
top: 75px;
z-index: 20;
}
#canvas{
-o-transform: transform 6s;
-ms-transform: transform 6s;
-moz-transform: transform 6s;
-webkit-transform: transform 6s;
transition: transform 6s;
-o-transform-origin: 50% 50%;
-ms-transform-origin: 50% 50%;
-moz-transform-origin: 50% 50%;
-webkit-transform-origin: 50% 50%;
transform-origin: 50% 50%;
}
#btn{
width: 60px;
height: 60px;
left: 120px;
top: 120px;
border-radius: 100%;
position: absolute;
cursor: pointer;
border: none;
background: transparent;
outline: none;
z-index: 40;
}
</style>
<script src='js/jquery-2.1.1.min.js'></script>
<script src='js/index.js'></script>
</head>
<body>
<!--
1.把旋转盘画出来；
2.计算随机生成一个旋转角度；
3.点击按钮旋转
-->
<div class="radius">
<canvas id="canvas" width="300" height="300"></canvas>
<canvas id="canvas1" width="200" height="200"></canvas>
<canvas id="canvas2" width="200" height="200"></canvas>
<canvas id="canvas3" width="150" height="150"></canvas>
<button id="btn"></button>
</div>
</body>
</html>