W3cubDocs

/Angular 7

SimpleChange

class

Represents a basic change from a previous to a new value.

class SimpleChange {
  constructor(previousValue: any, currentValue: any, firstChange: boolean)
  previousValue: any
  currentValue: any
  firstChange: boolean
  isFirstChange(): boolean
}

Constructor

constructor(previousValue: any, currentValue: any, firstChange: boolean)

Parameters
previousValue any
currentValue any
firstChange boolean

Properties

Property Description
previousValue: any Declared in constructor.
currentValue: any Declared in constructor.
firstChange: boolean Declared in constructor.

Methods

Check whether the new value is the first value assigned.

isFirstChange(): boolean

Parameters

There are no parameters.

Returns

boolean

© 2010–2019 Google, Inc.
Licensed under the Creative Commons Attribution License 4.0.
https://v7.angular.io/api/core/SimpleChange