div.offsetLeft offsetTop详解 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
     <style>
        *{
            margin: 0;
            padding: 0;
        }
        .father{
            width: 200px;
            height: 200px;
            margin-top: 100px;
            margin-left: 100px;
            background: blue;
            overflow: hidden;
            /*position: relative;*/
        }
        .son{
            width: 100px;
            height: 100px;
            margin-top: 100px;
            margin-left: 100px;
            background: red;
        }
    </style>
</head>
<body>
<div class="father">
    <div class="son"></div>
</div>
<script type="text/javascript">
    /*
    1.offsetLeft和offsetTop作用
    获取元素到第一个定位祖先元素之间的偏移位
    如果没有祖先元素是定位的, 那么就是获取到body的偏移位
    */
   let oSDiv = document.querySelector(".son");
   oSDiv.onclick=function()
   {
    console.log(oSDiv.offsetLeft);
    console.log(oSDiv.offsetTop);
   }
</script>
</body>
</html>
posted @ 2020-09-18 22:53  贵哥的编程之路  阅读(45)  评论(0)    收藏  举报