Angular - Confirm Password Validation Using Custom Validators

To confirm password validation in Angular forms, you can use a custom validator to ensure two password fields (like password and confirmPassword) match. This is especially useful in sign-up or password reset forms where password confirmation is necessary.

Prerequisite

• Node NPM
• AngularJS
• JavaScript / TypeScript

Steps To Implement CustomConfirm Password Validation

Step 1: Install Angular CLI if you haven't installed it already.

npm install -g @angular/cli

Step 2: Create a new Angular application using the following command.

ng new password-validator-app

Folder Structure

Dependencies

"dependencies": {
 "@angular/animations": "^18.2.0",
 "@angular/common": "^18.2.0",
 "@angular/compiler": "^18.2.0",
 "@angular/core": "^18.2.0",
 "@angular/forms": "^18.2.0",
 "@angular/platform-browser": "^18.2.0",
 "@angular/platform-browser-dynamic": "^18.2.0",
 "@angular/router": "^18.2.0",
 "rxjs": "~7.8.0",
 "tslib": "^2.3.0",
 "zone.js": "~0.14.10"
 }

Step 3: Create the Component Logic

In app.component.ts, create the form using the FormBuilder service, adding custom validators for password complexity requirements and a validator to confirm that the password and confirm password fields match.

In this code

• Password Match Validator (passwordMatchValidator): Verifies that password and confirmPassword fields match.
• Uppercase Validator (hasUppercase): Ensures that the password has at least one uppercase letter.
• Number Validator (hasNumber): Ensures that the password contains at least one number.
• Special Character Validator (hasSpecialCharacter): Ensures that the password includes at least one special character.

Step 4: Create the HTMl template.

In app.component.html, set up the form with the appropriate form controls and error messages

Step 5: Style the Form.

In app.component.css, apply basic styling to improve the form's appearance.

To run the application, use the below command

ng serve

Output