tab栏模板

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="container">
        <a href=""></a>
        <a href=""></a>
        <a href=""></a>
        <a href=""></a>
    </div>

    <script>
        var container = document.querySelector('#container');
        var as = container.querySelectorAll('a');
        console.log(as);
    </script>
</body>
</html>

<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>选项卡</title>
		<style type="text/css">
			*{margin: 0; padding: 0; font-family: "微软雅黑";font-size: 14px;}
			#container{
				width: 398px; 
				margin: 100px auto;}
			#container a{
				display:block ;
				width: 98px; 
				height: 42px; 
				line-height: 42px; 
				text-align: center; 
				float: left;
				border-top: solid 1px #FF4400;
				border-bottom: solid 1px #FF4400;
				border-left: solid 1px #FF4400;
				color: #333333;
				text-decoration: none;
			}
			#container a:hover{
				color: #FF4400;
			}
			.content{
				width: 355px;
				height: 140px;
				text-align: center;
				border-right: solid 1px #FF4400;
				border-bottom: solid 1px #FF4400;
				border-left: solid 1px #FF4400;
				padding: 30px 0 0 40px;
				display: none;
			}
			.clear{clear: left;}
			#container a.on{ background: #FF4400; color: #fff;}
		</style>
	
	</head>
	<body>
		<div id="container">
			<a href="#"  class="on">红</a>
			<a href="#" >黄</a>
			<a href="#" >绿</a>
			<a href="#"  style="border-right: solid 1px #FF4400;">蓝</a>

			<div class="clear"></div>
			
			<div class="content" style="display:block; background-color: red;">
				<!-- <img src="images/1.png" /> -->
			</div>
			<div class="content" style="background-color: yellow;">
				<!-- <img src="images/2.png" /> -->
			</div>
			<div class="content" style="background-color: lightgreen;">
				<!-- <img src="images/3.png" /> -->
			</div>

			<div class="content" style="background-color: skyblue;">
				<!-- <img src="images/4.png" /> -->
			</div>
		</div>
	</body>
</html>
<script type="text/javascript">
	 // 找到所有的导航
	 var container = document.getElementById("container");
	 var as = container.getElementsByTagName("a");
	 // 找到所有内容
	 var oDivs = document.getElementsByClassName("content");
	 // 给所有的a链接绑定事件
	 for(var i=0; i<as.length; i++) {
	 	as[i].setAttribute("index", i);
	 	//as[i].index = i; // 给对象动态增加一个属性
	 	as[i].onclick = function() {
	 		// 给当前的链接设置样式 其他的去除 ----排他思想
	 		// 先清楚所有链接样式和让所有的内容div隐藏 
	 		for(var j=0; j<as.length; j++) {
	 			as[j].className = "";
                oDivs[j].style.display = "none";
	 		}
	 		// 对当前自己设置on样式
	 		this.className = "on";
	 		// 让对应的内容显示 0-0  1-1 2-2
	 		var index = this.getAttribute("index"); // 当前超链接的索引
	 		//var index = this.index;
	 		oDivs[index].style.display = "block";
	 	}
	 }
</script>