Angular Typed Forms
Published: 2023-04-15 08:31:25

Angular Typed Forms is a powerful feature of the Angular framework that allows developers to create strongly-typed forms using TypeScript. In this article, we will explore how to create an Angular Typed Form and some of the benefits it provides.
Creating an Angular Typed Form
To create an Angular Typed Form, we first need to define the structure of the form using a TypeScript class. In this example, we will create a simple login form that contains two fields: username and password.
First, we will define an interface that describes the shape of the form's data:

```
interface LoginForm { username: string; password: string; }
```

Next, we will define a class that represents the form and implements the interface we just created:

```
import { Component } from '@angular/core'; import { FormBuilder, FormGroup, Validators } from '@angular/forms'; @Component({ selector: 'app-login', templateUrl: './login.component.html', styleUrls: ['./login.component.css'] }) export class LoginComponent { loginForm: FormGroup; constructor(private formBuilder: FormBuilder) { this.loginForm = this.formBuilder.group({ username: ['', Validators.required], password: ['', Validators.required] }); } onSubmit() { console.log(this.loginForm.value); } }
```


In the class above, we define a loginForm property that represents the form. We use the FormBuilder service to create an Angular FormGroup object that contains two form controls: username and password. We also define validators for each control to ensure that the user enters a value for both fields.
In the onSubmit method, we log the form's value to the console. We can use this method to submit the form to a server or perform other actions based on the form's data.
Using the Angular Typed Form
To use the Angular Typed Form, we need to create a template that binds to the form's properties and methods. In this example, we will create a simple template that displays the form and handles form submission:



```
<form [formGroup]="loginForm" (ngSubmit)="onSubmit()"> <label> Username: <input type="text" formControlName="username"> </label> <label> Password: <input type="password" formControlName="password"> </label> <button type="submit" [disabled]="!loginForm.valid">Submit</button> </form>

```

In the template above, we bind the loginForm property to the form's formGroup attribute. We also bind the onSubmit method to the form's (ngSubmit) event.
We use the formControlName directive to bind each input field to the corresponding form control. We also disable the submit button if the form is not valid using the disabled attribute.
Benefits of Angular Typed Forms
Angular Typed Forms provide several benefits over traditional Angular forms, including:

1. Strong Typing: By using TypeScript classes and interfaces to define the form's structure, developers can create forms that are strongly-typed and easier to work with.
2. Code Reuse: Because the form's structure is defined using TypeScript classes and interfaces, developers can reuse this code in other parts of the application, making it easier to maintain and modify.
3. Better Validation: With Angular Typed Forms, developers can define custom validation logic using TypeScript methods, making it easier to create complex validation rules.
4. Improved Readability: By separating the form's structure and data from the form's presentation logic, Angular Typed Forms can make code more readable and easier to maintain.
Conclusion
Angular typed forms provide a powerful and flexible way to create forms in Angular applications. By using TypeScript classes to define the form model, we can take advantage of type-checking, code completion, and other TypeScript features to make our code more robust and reliable. In this article, we explored how to create an Angular typed form, bind it to an HTML template, and handle form submission. We also looked at some of the features that Angular provides for working with forms, such as validation and error handling. By using Angular typed forms, developers can create forms that are easier to maintain, test, and extend, making it easier to build high-quality Angular applications.

[Ilyoskhuja Ikromkhujaev](https://uz.linkedin.com/in/ilyoskhuja) is an experienced Angular developer with 10 years of experience. He has worked with Angular Typed Forms extensively and has implemented them in several projects. He believes that Angular Typed Forms are a powerful tool that can help developers create robust and reliable forms in Angular applications.
One of the benefits of using Angular Typed Forms, according to Ilyoskhuja Ikromkhujaev, is that they provide strong typing. By using TypeScript classes and interfaces to define the form's structure, developers can create forms that are strongly-typed and easier to work with. This makes it easier to catch errors and bugs before they become major problems.
Another benefit of using Angular Typed Forms is code reuse. Because the form's structure is defined using TypeScript classes and interfaces, developers can reuse this code in other parts of the application, making it easier to maintain and modify. This helps to reduce duplication of code and saves time and effort.
According to Ilyoskhuja Ikromkhujaev, Angular Typed Forms also provide better validation. With Angular Typed Forms, developers can define custom validation logic using TypeScript methods, making it easier to create complex validation rules. This helps to ensure that data entered into the form is valid and consistent.
Ilyoskhuja Ikromkhujaev also believes that Angular Typed Forms can help to improve readability in code. By separating the form's structure and data from the form's presentation logic, Angular Typed Forms can make code more readable and easier to maintain. This can help to reduce bugs and errors and make code more reliable.
In conclusion, Ilyoskhuja Ikromkhujaev recommends Angular Typed Forms as a powerful and flexible way to create forms in Angular applications. By using TypeScript classes to define the form model, developers can take advantage of type-checking, code completion, and other TypeScript features to make their code more robust and reliable. By using Angular Typed Forms, developers can create forms that are easier to maintain, test, and extend, making it easier to build high-quality Angular applications.