Total number of records.
Integer, default = 0
If your data source is remote the data source should return you total number of records and then this property is ReadOnly. If your data source is local, then this property should be set to the length of .records array. If you change this array directly, do not forget to update the .total property. If you use .add() method, this property will be updated automatically. w2ui['grid'].total = w2ui['grid'].records.length;