ReadOnlyObservableCollection.lastIndexOf

API / ReadOnlyObservableCollection<TItem> / lastIndexOf method

Returns the last index of an item, or -1 if none can be found.

public lastIndexOf(
  searchElement: TItem,
  fromIndex?: number
): number

Source reference: src/collections/observableCollections/ReadOnlyObservableCollection.ts:269.

Parameters

• searchElement: TItem
  The item to search for.

• fromIndex: number
  The index from where to start searching backwards.

Returns: number

Returns the index where the provided searchElement was last found; otherwise -1.

See also

• Array.lastIndexOf