Reactive Forms - The Basics

TL;DR

Learn to create dynamic forms with validation and backend submission using Angular 6.

Transcript

today I'm going to show you everything you need to know to start using reactive forms in angular 6 effectively we'll do this by building five different forms that started the absolute basics then progress on to topics like dynamic form fields validation and submitting your form data to a back-end database almost all apps use forms in some capacity ... Read More

Key Insights

• 💁 Angular Material offers UI elements for form validation in Angular 6.
• 💁 Form groups and form builder are essential for building reactive forms in Angular 6.
• 💁 Nested forms and form arrays provide organization and dynamic field addition to forms.
• 😄 Built-in validators in Angular 6 facilitate form validation with ease.
• 💁 Submission of form data to a backend database in Angular 6 can be achieved using Angular Firestore.
• 💁 Managing form states like loading and success are crucial for user feedback in form submissions.
• 💁 Leveraging reactive forms in Angular 6 enables real-time updates and validations in form fields.

Questions & Answers

Q: How can you install Angular Material for form validation in Angular 6?

To install Angular Material, run 'ng add angular/material' in your Angular 6 project. Angular Material provides UI elements for form validation.

Q: What is the difference between form group and form builder in Angular reactive forms?

Form group ties form controls together into a unified form, while form builder is a service that simplifies form building in Angular reactive forms.

Q: How can you implement nested forms in Angular 6 reactive forms?

Nested forms in Angular 6 can be achieved by using a parent form group and adding nested form groups inside it for organizing form fields.

Q: How do you dynamically add fields to a form in Angular 6 using form array?

In Angular 6, you can dynamically add fields to a form using form array by allowing users to add new fields and removing existing fields in a reactive form.

Summary & Key Takeaways

• Learn how to set up reactive forms in Angular 6 for dynamic form fields, validation, and backend database submission.

• Utilize Angular Material for UI elements and form validation.

• Explore nested forms, form arrays for dynamic fields, form validation with built-in validators, and submitting form data to a backend database.