javascript 的 offsetParent用法

<!DOCTYPE html>
<html lang="en">
<head>
   <meta charset="UTF-8">
   <title>测试</title>
</head>
<body>
   <div style="width:100px; height: 100px; position: relative;">
       <div id="div1" style="width:50px; height: 50px; position: absolute; top: 20px; left: 20px;"></div>
   </div>
   <input type="button" value="按钮" id="btn1">
   <input type="text" id="tex1">
   <script>
       window.onload=function(){
            var oDiv=document.getElementById('div1');
            alert(oDiv.offsetParent.tagName);//弹出用于定位的父级.tagName父级名称
       }
   </script>
</body>
</html>

posted on 2016-01-18 16:21 茶白阅读(357) 评论(0) 编辑收藏举报