directive
input:not([type=checkbox])[formControlName]
textarea[formControlName]
input:not([type=checkbox])[formControl]
textarea[formControl]
input:not([type=checkbox])[ngModel]
textarea[ngModel]
[ngDefaultControl]
The default ControlValueAccessor
for writing a value and listening to changes on input elements. The accessor is used by the FormControlDirective
, FormControlName
, and NgModel
directives.
The following example shows how to use an input element that activates the default value accessor (in this case, a text field).
const firstNameControl = new FormControl();
<input type="text" [formControl]="firstNameControl">
This value accessor is used by default for <input type="text">
and <textarea>
elements, but you could also use it for custom components that have similar behavior and do not require special processing. In order to attach the default value accessor to a custom element, add the ngDefaultControl
attribute as shown below.
<custom-input-component ngDefaultControl [(ngModel)]="value"></custom-input-component>
© 2010–2020 Google, Inc.
Licensed under the Creative Commons Attribution License 4.0.
https://v10.angular.io/api/forms/DefaultValueAccessor