TrackByFunction

interface

npm Package	@angular/core
Module	import { TrackByFunction } from '@angular/core';
Source	core/src/change_detection/differs/iterable_differs.ts

Interface Overview

interface TrackByFunction<T> { 
  (index: number, item: T): any
}

Description

An optional function passed into NgForOf that defines how to track items in an iterable (e.g. fby index or id)

Members

(index: number, item: T): any