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

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Licensed under the Creative Commons Attribution License 4.0.
https://v4.angular.io/api/core/TrackByFunction