Ctrl+/
IE11
F11
ESC
PgUp
PgDn
<!DOCTYPE html>
<html>
<head>
<meta content="text/html;charset=utf-8" http-equiv="Content-Type" />
<script type="text/javascript" src="//apps.bdimg.com/libs/jquery/1.11.3/jquery.min.js">
</script>
</head>
<body>
<div class="container">
<img src="/upload/files/201604/5de0dcd7dac.jpg" alt="" />
</div>
</body>
</html>
xxxxxxxxxx
*{
margin:0;
padding:0;
}
body{
background:#000000;
.container{
position:relative;
width:1000px;
height:800px;
margin:0 auto;
.container img{
position:absolute;
width:293px;
height:144px;
background:#000;
color:#FFFFFF;
font-size:16px;
.dot{
width:20px;
height:20px;
background:#F00;
$(function(){
//中心点横坐标
var dotLeft = ($(".container").width()-$(".dot").width())/2-100;
//中心点纵坐标
var dotTop = ($(".container").height()-$(".dot").height())/2-100;
//椭圆长边
a = 460;
//椭圆短边
b = 120;
//起始角度
var stard = 0;
//每一个BOX对应的角度;
var avd = 360/$(".container img").length;
//每一个BOX对应的弧度;
var ahd = avd*Math.PI/180;