offsetLeft和offsetTop
2019-05-13 本文已影响0人
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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title> offsetLeft和offsetTop </title>
<!-- offsetLeft：
获取自身左外边框到定位父级的左内边框的距离
offsetTop
获取自身上外边框到定位父级的上内边框的距离
只能获取不能修改 -->
<style>
.box {
width: 200px;
height: 200px;
background-color: #0f0;
position: relative;
border: 10px solid black;
}
.box1 {
width: 100px;
height: 100px;
background-color: #f00;
position: absolute;
margin-left: 50px;
left: 50px;
margin-top: 20px;
top: 110px;
}
</style>
</head>
<body>
<div class="box">
<div class="box1"></div>
</div>
<script>
var box = document.getElementsByClassName('box')[0];
var box1 = document.querySelector('.box1');
console.log(box1.offsetLeft, box1.offsetTop);
</script>
</body>
</html>
