Building a Password Strength Meter in Angular 17
Implementing a password strength meter in Angular 17 is a valuable addition to any web application that requires user authentication. This tutorial will guide you through a detailed step-by-step process to create a password strength meter using Angular 17 and the zxcvbn
library.
Step 1: Set Up Your Angular 17 Environment
First, ensure you have Node.js and npm installed on your system. Then, install the Angular 17 CLI globally by running the following command in your terminal:
npm install -g @angular/cli
Step 2: Create a New Angular 17 Project
Open your terminal and create a new Angular 17 project by running the following command:
ng new password-strength-meter
cd password-strength-meter
Step 3: Install zxcvbn
Next, install the zxcvbn
library, which we'll use to calculate password strength. Run the following command in your project directory:
npm install zxcvbn
Step 4: Generate a Password Strength Component
Use the Angular 17 CLI to generate a new component for the password strength meter:
ng generate component password-strength
Step 5: Implement Password Strength Logic
Navigate to the newly created password-strength.component.ts
file in your password-strength
component directory. Add the following code to calculate the password strength:
import { Component, Input } from '@angular/core';
import * as zxcvbn from 'zxcvbn';
@Component({
selector: 'app-password-strength',
templateUrl: './password-strength.component.html',
styleUrls: ['./password-strength.component.css']
})
export class PasswordStrengthComponent {
@Input() password: string = '';
getPasswordStrength(): number {
const result = zxcvbn(this.password);
return result.score;
}
}
Step 6: Create the Password Strength Template
Open the password-strength.component.html
file and add the following code:
<div [ngClass]="{ 'weak': getPasswordStrength() < 3, 'strong': getPasswordStrength() >= 3 }">
<div class="strength-meter" [style.width]="getPasswordStrength() * 25 + '%'"></div>
</div>
Step 7: Style the Password Strength Meter
Open the password-strength.component.css
file and add the following styles:
.strength-meter {
height: 10px;
background-color: #ddd;
}
.weak .strength-meter {
background-color: #ff6961; /* Red for weak passwords */
}
.strong .strength-meter {
background-color: #77dd77; /* Green for strong passwords */
}
Step 8: Use the Password Strength Component
Now, you can use the app-password-strength
component in any other component by passing the password as an input.
Example Usage:
<app-password-strength [password]="userPassword"></app-password-strength>
Conclusion
Congratulations! You've successfully implemented a password strength meter in your Angular 17 application using the zxcvbn
library. This feature enhances the security of your application by providing users with feedback on the strength of their passwords. Feel free to customize the styling and further enhance the functionality based on your application's requirements.
- Author: Ahmed Bouchefra Follow @ahmedbouchefra
-
Date:
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