vue等待数据渲染完成后执行下一个方法问题

 watch: {
        dataDetails: function() {
            this.$nextTick(() => { 
                this.changeView()
            });
        }
    },

watch:{
        htcfOrder:function(){
            //页面渲染完成后的操作
            this.$nextTick(function(){
                // 开工前
                if(vm.htcfOrder !=null && vm.htcfOrder.beforeWorkList !=null && vm.htcfOrder.beforeWorkList.length>0){
                    for (let i = 0; i < vm.htcfOrder.beforeWorkList.length; i++) {
                        if (vm.htcfOrder.beforeWorkList[i].urlType == 1){
                            var player2 = videojs(vm.htcfOrder.beforeWorkList[i].extKey+i,{
                                muted: false,controls : true,height:300,width:300,poster:'',src:'',preload:"auto"
                            },function(){
                            });
                            player2.reset();
                            player2.src(vm.htcfOrder.beforeWorkList[i].extValue);
                            player2.load();
                        }
                    }
                }
            })
        }
    },
methods:{}