js+css实现tab菜单切换效果的方法_javascript技巧

index.css如下：

代码如下:* {
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：
代码如下:






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;
};
}
};

希望本文所述对大家的javascript程序设计有所帮助。