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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>jquery 偏移操作</title>
<script src='jquery-3.3.1.min.js'></script>
<style>
*{padding:0px;margin:0px;}
#dvs{
width: 200px;
height: 200px;
border: solid 2px blue;
background: #f59;
border-radius:50%;
position:absolute;
left: 50px;
top:30px;
}
#all{
width: 400px;
height: 400px;
border:solid 1px blue;
border-radius:50%;
position:relative;
left:60px;
top:60px;
}
#uls li{
width:80px;
height:30px;
border:solid 1px blue;
}
</style>
</head>
<body>
<div id='all'>
<div id='dvs' ></div>
</div>
<ul id='uls'>
<li>军事</li>
<li>科技</li>
<li>生活</li>
<li>汽车</li>
</ul>
<script>
//offsetTop offsetLeft
var os = $('#dvs').offset();
var os = $('#dvs').position();
//返回的值是number类型
console.log(os);
//宽度和高度
//文档宽
var sw = $(document).width();
//可视区域
var cw = $(window).width();
//元素本身的宽
var dw = $('#all').width();
var sh = $(document).height();
var ch = $(window).height();
var dh = $('#all').height();
console.log(dw,dh);
$('#uls li').mouseover(function(){
console.log($(this).index());
})
</script>
</body>
</html>点击 "运行实例" 按钮查看在线实例
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