vuejs实现标签选项卡动态更改css样式的方法

 
    
{{item.name}}
 
 

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; 
      } 
      //  
    }   
});