我是一条有梦想的咸鱼

获取不到offsetHeight问题

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <style>
         *{
           
           margin: 0;
           padding: 0;

         }
         .imgBox ul{
            
         
            list-style: none;
            width:630px;
            margin:0 auto;
            position:relative;

         }

         .imgBox ul li {

          // width:200px;
           //height: 150px;
           float:left;
           margin-right:10px;

         }
    </style>
</head>
<body>

      <div id="imgBox" class="imgBox">

        <ul>
            <li><img src="images/0.jpg" alt=""></li>
            <li><img src="images/1.jpg" alt=""></li>
            <li><img src="images/2.jpg" alt=""></li>
            <li><img src="images/3.jpg" alt=""></li>
            <li><img src="images/4.jpg" alt=""></li>
            <li><img src="images/5.jpg" alt=""></li>
            <li><img src="images/6.jpg" alt=""></li>
            <li><img src="images/7.jpg" alt=""></li>
            <li><img src="images/8.jpg" alt=""></li>
        </ul>
        
     </div>


    <script>
       var imgBox=document.getElementById("imgBox");
       var lis=document.getElementsByTagName("li");
       var arr=[];

       for(var i=0;i<lis.length;i++){

           arr[i]={left:lis[i].offsetLeft,top:lis[i].offsetTop};
      
       }

       console.log(arr);

        for(var j=0;j<lis.length;j++){
             
             lis[j].style.left=arr[j].left+"px";
             lis[j].style.top=arr[j].top+"px";
              lis[j].style.position="absolute";

        }
    </script>
</body>
</html>

这段代码相信大家都能看懂  如果不设置li元素的宽高  获取到的offsetTop始终是0!!!

posted @ 2018-09-07 13:19  帅哥天下9  阅读(2733)  评论(0编辑  收藏  举报