Mastering Email Validation in Angular Forms: A Developer’s Guide

Ayyaz Zafar
2 min readNov 16, 2023

Introduction

In the world of web development, validating user input is crucial for both functionality and security. Angular, a popular framework among developers, offers robust solutions for form validation. This article provides a step-by-step guide on implementing email validation in Angular forms, covering both template-driven and reactive approaches.

Setting the Stage: Prerequisites and Setup

Before we begin, it’s important to have a basic understanding of Angular and its forms. Make sure your Angular project is set up with the Forms Module and Reactive Forms Module.

Step 1: Implementing Template-Driven Forms

Template-driven forms are a straightforward way to handle form inputs in Angular. Here’s how you can set up an email validation using this approach:

<!-- In your component's template -->
<form>
<input type="email" name="email" [(ngModel)]="email" required email #emailField="ngModel">
<div *ngIf="emailField.errors && (emailField.dirty || emailField.touched)">
<p *ngIf="emailField.errors.required">Email is required.</p>
<p *ngIf="emailField.errors.email">Please enter a valid email.</p>
</div>
</form>

In this snippet, we use the required and email validators provided by Angular. The #emailField="ngModel" creates a template reference variable to track the state and validation status of the input field.

Step 2: Reactive Form Approach

Reactive forms offer more control and flexibility. Here’s a code snippet to set up email validation using reactive forms:

// In your component class
import { FormGroup, FormControl, Validators } from '@angular/forms';

export class YourComponent {
emailForm = new FormGroup({
email: new FormControl('', [Validators.required, Validators.email])
});
}
<!-- In your component's template -->
<form [formGroup]="emailForm">
<input type="email" formControlName="email">
<div *ngIf="emailForm.get('email').errors && (emailForm.get('email').dirty || emailForm.get('email').touched)">
<p *ngIf="emailForm.get('email').errors.required">Email…

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