js+css实现tab菜单切换效果的方法

Z时代
2024-01-10
分类：综合

本文实例讲述了js+css实现tab菜单切换效果的方法。分享给大家供大家参考。具体实现方法如下：

index.css如下：

* {  
    margin: 0px;  
    padding: 0px;  
}  
body {  
    width: 600px;  
    margin: 0 auto;  
    background-color: silver;  
}  
  
#contanier {  
    background-color: yellow;  
    width: 600px;height: 400px;  
}  
  
#tabNavi {  
    width: 600px;height: 30px;  
    background-color: #00bfff;  
    text-decoration: none;  
    list-style-type: none;  
}  
  
#tabNavi li {  
    float: left;  
    margin-right: 7px;  
     background-color: #008b8b;  
    color: white;  
    cursor: pointer;  
    width: 60px;  
    height: 28px;  
    line-height: 30px;  
    text-align: center;  
}  
#content {  
    width: 600px;height: 370px;  
    background-color: white;  
}

index.html如下：

<!DOCTYPE html>  
<html xmlns="http://www.w3.org/1999/xhtml">  
<head>  
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>  
    <title>js实现tab菜单动态切换效果</title>  
    <link href="css/index.css" rel="stylesheet" />  
    <script type="text/javascript">  
        function gel(id) {  
            return document.getElementById(id);  
        }  
  
        var arr = [  
            { "title": "新闻", "content": "这是新闻频道" },  
            { "title": "财经", "content": "这是财经频道" },  
            { "title": "娱乐", "content": "这是娱乐频道" },  
            { "title": "体育", "content": "这是体育频道" },  
            { "title": "汽车", "content": "这是汽车频道" },  
            { "title": "视频", "content": "这是视频频道" },  
            { "title": "生活", "content": "这是生活频道" }  
        ];  
  
        window.onload = function() {  
            for (var i = 0; i < arr.length; i++) {  
                var liNew = document.createElement("li");  
                liNew.innerHTML = arr[i].title;  
                gel("tabNavi").appendChild(liNew);  
                //在这些li上面都绑定点击事件，就需要给他们每一个赋一个属性(最好是id)  
                liNew.setAttribute("id", i);  
                  
                liNew.onclick = function () {  
                   var navs = gel("tabNavi").childNodes;  
                    //清除所有颜色  
                   for (var j = 0; j < navs.length; j++) {  
                       if (navs[j].nodeType == 1) {  
                           navs[j].style.backgroundColor ="#008b8b";  
                       }  
                    }  
  
                    this.style.backgroundColor = "red";  
                    gel("content").innerHTML = arr[this.id].content;  
                };  
            }  
        };  
    </script>  
</head>  
<body>  
    <div id="contanier">  
        <ul id="tabNavi"></ul>  
        <div id="content" class="content"></div>  
    </div>  
</body>  
</html>