@angular/forms
Advanced tools
Package description
The @angular/forms package is a part of the Angular framework that provides tools for creating and managing forms in Angular applications. It offers two approaches: Reactive Forms and Template-driven Forms, which allow developers to handle user input and form validation in a robust and scalable way.
Reactive Forms
Reactive Forms provide a model-driven approach to handling form inputs whose values change over time. This feature allows for more flexible, scalable, and testable forms.
import { ReactiveFormsModule } from '@angular/forms';
@NgModule({
imports: [
// other imports ...
ReactiveFormsModule
],
})
export class AppModule { }Template-driven Forms
Template-driven Forms are useful for adding simple forms to your app with minimal setup. They are less flexible than Reactive Forms but can be easier to use for basic scenarios.
import { FormsModule } from '@angular/forms';
@NgModule({
imports: [
// other imports ...
FormsModule
],
})
export class AppModule { }Form Validation
The package provides built-in validators as well as the ability to create custom validators, making it easy to implement complex validation logic for form fields.
import { FormControl } from '@angular/forms';
let email = new FormControl('', [Validators.required, Validators.email]);Form Groups
Form Groups are used to group together multiple form controls into one object, allowing for easier management of form data and validation.
import { FormGroup, FormControl } from '@angular/forms';
let userForm = new FormGroup({
firstName: new FormControl(),
lastName: new FormControl(),
age: new FormControl()
});React Hook Form is a library for React that enables the management of forms with minimal re-renders. It is similar to @angular/forms in providing form validation and form state management, but it is designed specifically for React and uses hooks.
Formik is another popular form library for React. It simplifies the process of building, validating, and handling forms. It is comparable to @angular/forms in its functionality but is tailored to the React ecosystem.
Redux Form leverages Redux for form state management in React applications. It is similar to @angular/forms in that it handles form state and validation, but it integrates tightly with Redux for state management.
Changelog
18.0.0-next.3 (2024-04-03)
RouterOutlet. This means that providers available only to the
component that defines the RouterOutlet will no longer be available to
route components in any circumstances. This was already the case
whenever routes defined providers, either through lazy loading an
NgModule or through explicit providers on the route config.| Commit | Type | Description |
| -- | -- | -- |
| f824911510 | fix | For FatalDiagnosticError, hide the message field without affecting the emit (#55160) |
| Commit | Type | Description | | -- | -- | -- | | c04ffb1fa6 | fix | use switch statements to narrow Angular switch blocks (#55168) |
| Commit | Type | Description |
| -- | -- | -- |
| 666d646575 | feat | Add event delegation library to queue up events and replay them when the application is ready (#55121) |
| 146306a141 | feat | add support for i18n hydration (#54823) |
| 840c375255 | fix | do not save point-in-time setTimeout and rAF references (#55124) |
| 231e0a3528 | fix | handle ChainedInjectors in injector debug utils (#55144) |
| a5fa279b6e | fix | prevent i18n hydration from cleaning projected nodes (#54823) |
| f44a5e4604 | fix | support content projection and VCRs in i18n (#54823) |
| 914e4530b0 | fix | test cleanup should not throw if Zone is not present (#55096) |
| a99cb7ce5b | fix | zoneless scheduler should check if Zone is defined before accessing it (#55118) |
| Commit | Type | Description | | -- | -- | -- | | 1c736dc3b2 | feat | Unified Control State Change Events (#54579) |
| Commit | Type | Description | | -- | -- | -- | | a48afe0d94 | fix | avoid generating TS syntactic diagnostics for templates (#55091) |
| Commit | Type | Description | | -- | -- | -- | | 0c20c4075a | fix | avoid conflicts with some greek letters in control flow migration (#55113) |
| Commit | Type | Description | | -- | -- | -- | | 45ae7a6b60 | feat | add withI18nSupport() in developer preview (#55130) |
| Commit | Type | Description |
| -- | -- | -- |
| 87f3f27f90 | feat | Allow resolvers to return RedirectCommand (#54556) |
| 3839cfbb18 | fix | Routed components never inherit RouterOutlet EnvironmentInjector (#54265) |
<a name="18.0.0-next.2"></a>
Readme
The sources for this package are in the main Angular repo. Please file issues and pull requests against that repo.
Usage information and reference details can be found in Angular documentation.
License: MIT
FAQs
Angular - directives and services for creating forms
We found that @angular/forms demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
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