SimpleChange
Represents a basic change from a previous to a new value for a single
property on a directive instance. Passed as a value in a
SimpleChanges
object to the ngOnChanges
hook.
class SimpleChange {
constructor(previousValue: any, currentValue: any, firstChange: boolean)
previousValue: any
currentValue: any
firstChange: boolean
isFirstChange(): boolean
}
See also
Constructor
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. |
ParametersThere are no parameters. Returns
|