IReadOnlyObservableCollection.indexOf

API / IReadOnlyObservableCollection<TItem> / indexOf method

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

indexOf(
  searchElement: TItem,
  fromIndex?: number
): number

Source reference: src/collections/observableCollections/IReadOnlyObservableCollection.ts:96.

Parameters

• searchElement: TItem
  The item to search for.

• fromIndex: number
  The index from where to start the search, accepts both positive and negative values.

Returns: number

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

See also

• Array.indexOf