vuie

let data ={        tabs:[    {        title:"新闻",        sublist:[            {                subtitle:"新闻111"            },            {                subtitle:"新闻111"            },{                subtitle:"新闻111"            }        ]    },{        title:"娱乐",        sublist:[            {                subtitle:"娱乐111"            },            {                subtitle:"娱乐111"            },{                subtitle:"娱乐111"            }        ]    },{        title:"体育",        sublist:[            {                subtitle:"体育111"            },            {                subtitle:"体育111"            },{                subtitle:"体育111"            }        ]    }    ]    ,currentIndex:-1        }            new Vue({                el:"#app",                data:data,                methods:{                    changeTabs(i){                        console.log(this.currentIndex)                        this.currentIndex = this.currentIndex === i ? -1 : i;                    },                    addStyle(i){                        return {display:this.currentIndex  === i ? 'block' :'none'}                    }                }            })