<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
.redDiv{
width: 500px;
height: 500px;
background-color: red;
border: 50px solid;
/*position: relative;*/
}
.blueDiv{
width: 200px;
height: 200px;
background-color: blue;
/*margin-left: 10px;*/
/*position: absolute;
left: 10px;*/
/*float: left;*/
display: inline-block;
border: 1px solid royalblue;
/*padding: 50px;*/
/*background-clip: content-box;*/
}
.yellowDiv{
width: 100px;
height: 100px;
background-color: yellow;
/*position: absolute;
left: 250px;*/
/*float: left;*/
display: inline-block;
}
</style>
</head>
<body>
<div class="redDiv">
<div class="blueDiv"></div>
<div class="yellowDiv"></div>
</div>
</body>
<script type="text/javascript">
var redDiv=document.querySelector(".redDiv");
var blueDiv=document.querySelector(".blueDiv");
var yellowDiv=document.querySelector(".yellowDiv");
//offsetLeft是自身的左边距离定位父级的左边的距离。
//如果没有定位父级，则以窗口左边为准。
console.log(blueDiv.offsetLeft);
//client是自身边框的宽度
console.log(blueDiv.clientLeft);
console.log(yellowDiv.offsetLeft);
console.log(redDiv.offsetWidth);
console.log(redDiv.clientWidth);
</script>
</html>
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