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API > @angular/core

SimpleChange

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)
      
      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

isFirstChange()

Check whether the new value is the first value assigned.
isFirstChange(): boolean
      
      isFirstChange(): boolean
Parameters

There are no parameters.

Returns

boolean