Building a Password Strength Meter in React
In this tutorial, we'll learn how to create a password strength meter component in React. This component will evaluate the strength of a password based on certain criteria and provide visual feedback to the user.
Prerequisites
- Basic knowledge of React
- Node.js and npm installed on your machine
Step 1: Setting Up a React Project
If you haven't already, create a new React project using Create React App:
npx create-react-app react-password-strength-meter
cd react-password-strength-meter
Step 2: Install Dependencies
Install the zxcvbn library, which is a password strength estimator:
npm install zxcvbn
Step 3: Create the PasswordStrengthMeter Component
Inside the src
folder, create a new file named PasswordStrengthMeter.js
:
// src/PasswordStrengthMeter.js
import React from 'react';
import zxcvbn from 'zxcvbn';
const PasswordStrengthMeter = ({ password }) => {
const testedResult = zxcvbn(password);
const strength = testedResult.score * 25;
return (
<div>
<progress value={strength} max="100"></progress>
<p>{testedResult.feedback.suggestions.join(' ')}</p>
</div>
);
};
export default PasswordStrengthMeter;
Step 4: Using the PasswordStrengthMeter Component
Now, import and use the PasswordStrengthMeter
component in your main App.js
file:
// src/App.js
import React, { useState } from 'react';
import PasswordStrengthMeter from './PasswordStrengthMeter';
const App = () => {
const [password, setPassword] = useState('');
const handlePasswordChange = (e) => {
setPassword(e.target.value);
};
return (
<div>
<h1>Password Strength Meter</h1>
<input
type="password"
placeholder="Enter your password"
value={password}
onChange={handlePasswordChange}
/>
<PasswordStrengthMeter password={password} />
</div>
);
};
export default App;
Step 5: Testing the Component
Start your React development server:
npm start
Open your browser and navigate to http://localhost:3000
to see your React application with the password input field and the password strength meter.
Conclusion
In this tutorial, we've created a password strength meter component in React using the zxcvbn library. This component evaluates the strength of a password based on certain criteria and provides visual feedback to the user. You can further customize the component's styling and criteria to suit your application's needs. Happy coding!
- Author: Ahmed Bouchefra Follow @ahmedbouchefra
-
Date:
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