vuejs实现标签选项卡-动态更改css样式

html

		<ul class="header-list">
				<li v-cloak v-for="(item,index) in headerList" v-on:click="selectMainTheme(index)"><a href="java:;" :class="{'active':idx == index}">{{item.name}}</a></li>
		</ul>

js

	var app = new Vue({
			el:"#app",
			router,
			data:{
				m:"hello vue.js",
				active:'2',
				idx:'0',   //默认选择首页
				headerList:[
					{name:'首页1'},
					{name:'首页2'},
					{name:'首页3'},
					{name:'首页4'},
					{name:'首页5'},
					{name:'首页6'}
				]
			},
			methods:{
				// 1.选择
				selectMainTheme:function(index){
					console.log("selectMainTheme" + index);
					console.log("idx" + this.idx);
					this.idx = index;
				}
				// 
			}	

	});