this.setValue();      var _this = this;      var _picker = this.picker;      var today = new Date();      this.picker.find('tbody td.day').on('click', function(){       var td = $(this);       var select_day = td.text();       // var lastdate = _this.viewDate;       // var last_month = lastdate.getMonth();       // var last_day = lastdate.getUTCDate();       var day = today.getUTCDate();       if(select_day > day) {         return false;       }      });