js盒模型
作者：互联网
1 <!DOCTYPE html>
2 <html lang="zh">
3 <head>
4 <meta charset="UTF-8">
5 <title>js盒模型</title>
6
7 <style type="text/css">
8 .sup {
9 width: 200px;
10 height: 200px;
11 padding: 30px;
12 border: 5px solid black;
13 background-color: orange;
14 margin: 20px;
15 position: relative;
16 }
17
18 .sub {
19 width: 100px;
20 height: 100px;
21 padding: 20px;
22 border: 5px solid black;
23 background-color: red;
24 position: absolute;
25 top: 0;
26 left: 20px;
27 }
28 </style>
29 </head>
30 <body>
31 <div class="sup">
32 <div class="sub"></div>
33 </div>
34 </body>
35 <script type="text/javascript">
36 var sup = document.querySelector('.sup');
37 // 盒子content的width
38 var width = parseInt(getComputedStyle(sup, null).width);
39 console.log(width);
40
41 // 盒子padding+width => 子级的可活动范围
42 var p_width = sup.clientWidth;
43 console.log(p_width);
44
45 // 盒子border+padding+width => 可视区域
46 var b_p_width = sup.offsetWidth;
47 console.log(b_p_width);
48
49 // 盒子距离定位父级的top,left
50 var sup_top = sup.offsetTop;
51 var sup_left = sup.offsetLeft;
52 console.log(sup_top);
53 console.log(sup_left);
54
55
56 var sub = document.querySelector('.sub');
57 // 父级定位(relative)后,子级活动区域为父级的client(padding+width)区域
58 var sub_top = sub.offsetTop;
59 var sub_left = sub.offsetLeft;
60 console.log(sub_top);
61 console.log(sub_left);
62
63 </script>
64 </html>
标签：console,sub,模型,js,width,sup,var,log 来源： https://www.cnblogs.com/xuqidong/p/12114411.html