JavaScript DOM操作案例div的高亮显示 

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

        div {
            width: 100px;
            height: 100px;
            background-color: green;
            float: left;
            margin-left: 10px;
            border: 5px solid green;
        }
    </style>
</head>
<body>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<script>
    //获取所有的div标签
    var divObjs = document.getElementsByTagName("div");
    for (var i = 0; i < divObjs.length; i++) {
        //为每个div添加鼠标进入的事件
        divObjs[i].onmouseover = function () {
          this.style.border = "5px solid red";
        };
        //为每个div添加鼠标离开的事件
        divObjs[i].onmouseout = function () {
          this.style.border = "";
        };
    }
</script>
</body>
</html>

 

posted @ 2018-07-23 21:14  {颜逸}  阅读(631)  评论(0)    收藏  举报