ObservableCollection

API / ObservableCollection<TItem> class

Represents an observable collection.

Extends: ReadOnlyObservableCollection<TItem>, implements IObservableCollection<TItem>.

class ObservableCollection<TItem> extends ReadOnlyObservableCollection<TItem> implements IObservableCollection<TItem>

Template Parameters

• TItem: the type of items the collection contains.

Constructors

• constructor: initializes a new instance of the ObservableCollection<TItem> class.

Methods

• push: appends new elements to the end of the collection, and returns the new length of the collection.
• pop: removes the last element from the collection and returns it. If the collection is empty, undefined is returned.
• unshift: inserts new elements at the start of the collection, and returns the new length of the collection.
• shift: removes the first element from the collection and returns it. If the collection is empty, undefined is returned.
• get: gets the item at the provided index.
• set: sets the provided item at the provided index.
• splice: removes and/or adds elements to the collection and returns the deleted elements.
• clear: Clears the contents of the collection and returns the removed items, similar to calling collection.splice(0).
• reset: resets the contents of the collection by clearing it and setting the provided items. Returns the new length of the collection. Similar to calling collection.splice(0, collection.length, ...items).