Angular Firebase Authentication | Login Signup with Angular Firebase | Explained | Source code

Firebase Authentication is a powerful feature for adding user authentication to your Angular apps. In this article, we will explore how to implement login and signup functionality using Angular and Firebase.

Setting up Firebase

First, you will need to create a Firebase project and enable Firebase Authentication. Once you have your project set up, you will need to include the Firebase JavaScript SDK in your Angular app. You can do this by adding the following script tag to your index.html file:


<script src="https://www.gstatic.com/firebasejs/9.0.1/firebase-app.js"></script>
<script src="https://www.gstatic.com/firebasejs/9.0.1/firebase-auth.js"></script>


Initializing Firebase

Next, you will need to initialize Firebase in your Angular app. You can do this by adding the following code to your app.module.ts file:


import { initializeApp } from 'firebase/app';
import { AngularFireModule } from '@angular/fire';

const firebaseConfig = {
apiKey: "YOUR_API_KEY",
authDomain: "YOUR_AUTH_DOMAIN",
projectId: "YOUR_PROJECT_ID",
storageBucket: "YOUR_STORAGE_BUCKET",
messagingSenderId: "YOUR_MESSAGING_SENDER_ID",
appId: "YOUR_APP_ID"
};

const app = initializeApp(firebaseConfig);


Implementing Login and Signup

Now that Firebase is set up in your Angular app, you can start implementing the login and signup functionality. You will need to create a login component and a signup component, and use the Firebase Authentication methods to handle the login and signup process.


// Login Component
import { getAuth, signInWithEmailAndPassword } from 'firebase/auth';

export class LoginComponent {
constructor() {
const auth = getAuth();
signInWithEmailAndPassword(auth, email, password)
.then((userCredential) => {
// Signed in
const user = userCredential.user;
// ...
})
.catch((error) => {
const errorCode = error.code;
const errorMessage = error.message;
});
}
}

// Signup Component
import { createUserWithEmailAndPassword } from 'firebase/auth';

export class SignupComponent {
constructor() {
createUserWithEmailAndPassword(auth, email, password)
.then((userCredential) => {
// Signed in
const user = userCredential.user;
// ...
})
.catch((error) => {
const errorCode = error.code;
const errorMessage = error.message;
});
}
}


Conclusion

In this article, we have covered the basics of setting up Firebase Authentication in an Angular app and implementing login and signup functionality. Firebase Authentication provides a secure and seamless way to authenticate users in your Angular apps, and with the code snippets provided, you should be able to get started with Firebase Authentication in no time.