update formgroup value angular
To set all FormGroup values use, setValue:
this.myFormGroup.setValue({
formControlName1: myValue1,
formControlName2: myValue2
});
To set only some values, use patchValue:
this.myFormGroup.patchValue({
formControlName1: myValue1,
// formControlName2: myValue2 (can be omitted)
});angular formgroup on value change
this.reactiveForm.get("firstname").valueChanges.subscribe(x => {
console.log('firstname value changed')
console.log(x)
})angular 9 form value changes
this.reactiveForm.get("firstname").valueChanges.subscribe(selectedValue => {
console.log('firstname value changed')
console.log(selectedValue) //latest value of firstname
console.log(this.reactiveForm.get("firstname").value) //latest value of firstname
})
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