VUE view data binding datetimepick

After generating the data usage datetimepick click on the date in the input tag plus v-model still can not get date data. The need to manually bind.
Binding method: listen date change event, the set value vue.

                dateDefind(){
                    var self=this;
                    $('#startTime').datetimepicker().on('changeDate', function (ev) {
                    var value = $("#startTime").val();
                    self.authorized.startTime = value;
                    });
                    $('#endTime').datetimepicker().on('changeDate', function (ev) {
                    var value = $("#endTime").val();
                    self.authorized.endTime = value;
                    });


                }
              },
              mounted:function(){
                  this.dateDefind();
              }