In Angular FormGroup you can get value of all controls using value or getRawValue() value is a property. getRawValue() is a FormGroup method. Both FormGroup and FormArray extends AbstractControl. So both FormArray and FormGroup can inherit the methods and properties of AbstractControl class. value Property in Angular value is a property of AbstractControl. If this
Angular
Angular FormGroup Add Control and Remove Control Dynamically
Here we are going to see how to add and remove a FormControl Dynamically in FormGroup In Angular FormGroup addControl and removeControl is used add and remove FormControl’s dynamically. For example a person has multiple address lines. Say Door Number is address line 1, street name is address line 2, etc. On checking address option
Angular FormGroup Methods
Following are the FormGroup methods. FormGroup has 9 methods which are listed below, Methods registerControl()addControl()setControl()removeControl()setValue()patchValue()getRawValue()reset()contains() registerControlregisterControl() method registers a control but does not update its value or validity of the formcontrol. To update the value or validity of the formcontrol use addControl() method. SyntaxregisterControl(name: string, control: AbstractControl) : AbstractControl addControlDynamically adds a control(FormControl) at runtime
Angular FormArray Methods setValue vs patchValue
FormArray has methods like setValue() and patchValue(). Both methods set the value of a formcontrol in a formgroup, but there is a difference. In simple terms, they update the form controls. setValue works for a whole group i.e., setValue updates all the formcontrols in the formgroup. patchValue patches for a part i.e., patchValue method only
What is FormArray in Angular
FormArray also groups the controls (FormControl) like FormGroup but in the form of an Array. If we want to add FormControl dynamically we can use FormArray. In FormArray we can add or remove a FormControl. So initially there is no FormControl orthere can be more number of FormControl when a control is added. Unlike FormGroup