DataCollection API

A set of APIs that allow you to work with data of a component.

Methods

add	adds a new item to the component
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
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
isSaved	checks whether the changes made in a data collection are saved to the server side
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 data of the component into an array of JSON objects
sort	sorts data items in a component
update	updates properties of the item

AfterAdd	fires after adding a new item into a data collection
AfterRemove	fires after removing a new item from a data collection
BeforeAdd	fires before adding a new item into a data collection
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