代码改变世界

传参-this的使用

2018-04-16 22:31  yelena  阅读(295)  评论(0)    收藏  举报 
<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title></title>
        <style type="text/css">
            .one{
                background-color: lightcyan;
                width: 80px;
                height: 30px;
                border: 1px solid lightcyan;
                float: left;
                padding-bottom: 20px;
                margin: 5px;
                text-align: center;
                line-height: 30px;            
                }
            .one:hover{
                    cursor: pointer;
                }
            .two{
                background-color: blue;
                width: 1000px;
            }
        </style>
    </head>
    <body>
        <div id="">
            <div class="one" onmouseover="aa(this)">栏目一</div>
            <div class="one" onmouseover="aa(this)">栏目二</div>
            <div class="one" onmouseover="aa(this)">栏目三</div>
            <div class="one" onmouseover="aa(this)">栏目四</div>
            <br />
            <br />
            <br />
            <div class="two">
                
            </div>
        </div>
    </body>
</html>
<script type="text/javascript">
    function aa(a){
        var two = document.getElementsByClassName("two")[0];
        two.innerHTML = "";
        for(var i = 0;i < 4; i++){
            two.innerHTML += a.innerHTML + "的内容<br/>";
        }
        
    }
</script>