What are Angular Reactive Forms and how do I use them?

What are Angular Reactive Forms and how do I use them?

Angular Reactive Forms are a way to manage form inputs in Angular applications using reactive programming. They provide a model-driven approach to handling form inputs, allowing for more dynamic and scalable forms.

Can you explain the difference between Reactive Forms and Template-driven Forms?

Sure! Reactive Forms are more powerful and scalable, allowing for complex validation and dynamic form controls. Template-driven Forms are simpler and more suitable for basic forms, relying on Angular directives.

How do I implement validation in Reactive Forms?

You can implement validation in Reactive Forms by using the Validators class. You can add validators when creating form controls, like this: this.form = this.fb.group({ name: ['', Validators.required] });.

What are some common validators I can use?

Common validators include Validators.required, Validators.minLength, Validators.maxLength, Validators.email, and Validators.pattern.

Can I create custom validators?

Yes, you can create custom validators by defining a function that returns either null (if valid) or an object (if invalid). You can then use this function in your form controls.