A set of APIs that allow you to work with data of a component.
| add | adds a new item to the component |
| changeId | changes the id of an element of a data collection |
| copy | creates a copy of an item at the defined position |
| exists | checks whether the specified item exists in the component |
| filter | filters items in the component by the specified key |
| find | finds an item that corresponds to the specified parameters |
| findAll | finds all the items that correspond to the specified parameters |
| forEach | iterates over all items of a data collection |
| getId | returns the id of the item by its index |
| getIndex | returns the index of the item by its id |
| getInitialData | returns the initial values of the items of a widget initialized in a data collection |
| getItem | returns the object of an item by its id |
| getLength | returns the number of all elements of a data collection |
| getLength | returns the number of all elements of a data collection |
| isDataLoaded | checks whether the specified data range is loaded from the server |
| load | loads data from an external file |
| map | iterates through all items of the component |
| mapRange | returns a new array of the items correspond to the specified parameters |
| move | moves an item to the defined position |
| parse | loads data from a local data source |
| reduce | reduces the array to a single value |
| remove | deletes the specified item from the component |
| removeAll | deletes all the items from the component |
| save | saves changes made in a data collection to the server side |
| serialize | serializes the component data into JSON, XML or CSV format |
| sort | sorts data items in a component |
| update | updates properties of the item |
| AfterAdd | fires after adding a new item into a data collection |
| AfterLazyLoad | fires after getting a response from the server |
| AfterRemove | fires after removing a new item from a data collection |
| BeforeAdd | fires before adding a new item into a data collection |
| BeforeLazyLoad | fires before sending a request to the server |
| BeforeRemove | fires before removing an item from a data collection |
| Change | fires when a data collection is modified |
| Load | fires when items are loaded in a data collection |
| LoadError | fires when loading of data fails |
| RemoveAll | fires when all items are removed from a data collection |