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js--对tab的简单封装

时间:2017-09-03 09:29:07      阅读:198      评论:0      收藏:0      [点我收藏+]
<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <script>
        window.onload = function(){
            function tab(obj){
                var target = document.getElementById(obj);
                var spans = target.getElementsByTagName("span");
                var lis = target.getElementsByTagName("li");

                for(var i=0; i < spans.length; i++){
                    spans[i].index = i;
                    spans[i].onmouseover = function(){
                        for(var j=0; j<spans.length;j++){
                            spans[j].className="";
                            lis[j].className = "";
                        }
                        this.className="current";
                        lis[this.index].className ="show";
                    }
                }
            }

            tab("one");
            tab("tow");
            tab("third")

        }
    </script>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        ul{
            list-style: none;
        }
        .box{
            width: 340px;
            height: 300px;
            border: 1px solid #ccc;
            margin: 100px auto;
        }
        .mt span{
            display: inline-block;
            width: 80px;
            height: 30px;
            background-color: pink;
            text-align: center;
            line-height: 30px;
            cursor: pointer;
        }
        .mb li{
            width: 100%;
            height: 270px;
            background-color: purple;
            display: none;
        }
        .mt span.current{
            background-color: purple;
        }
        .mb li.show{
            display: block;
        }
    </style>
</head>
<body>
<div class="box" id="one">
    <div class="mt">
        <span class="current">新闻</span>
        <span>体育</span>
        <span>娱乐</span>
        <span>八卦</span>
    </div>
    <div class="mb">
        <ul>
            <li class="show">新闻</li>
            <li>体育</li>
            <li>娱乐</li>
            <li>八卦</li>
        </ul>
    </div>
</div>
<div class="box" id="tow">
    <div class="mt">
        <span class="current">新闻</span>
        <span>体育</span>
        <span>娱乐</span>
        <span>八卦</span>
    </div>
    <div class="mb">
        <ul>
            <li class="show">新闻</li>
            <li>体育</li>
            <li>娱乐</li>
            <li>八卦</li>
        </ul>
    </div>
</div>
<div class="box" id="third">
    <div class="mt">
        <span class="current">新闻</span>
        <span>体育</span>
        <span>娱乐</span>
        <span>八卦</span>
    </div>
    <div class="mb">
        <ul>
            <li class="show">新闻</li>
            <li>体育</li>
            <li>娱乐</li>
            <li>八卦</li>
        </ul>
    </div>
</div>
</body>
</html>

  通过传递盒子的id,对不同盒子的tab进行特效操作。鼠标通过不同的span标签时,显示不同的内容。

js--对tab的简单封装

原文:http://www.cnblogs.com/jiang-z/p/7468607.html

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