             jsonp:'cb'
                        }).then(function(res){
                            this.myData=res.data.s;
                        },function(){
                            
                        });
                    },
                    changeDown:function(){
                        this.now++;
                        if(this.now==this.myData.length)this.now=-1;
                    },
                    changeUp:function(){
                        this.now--;
          