The following approach covers how to authenticate with Google using firebase in react. We have used firebase module to achieve so.
Creating React Application And Installing Module:
Step 1: Create a React myapp using the following command:
npx create-react-app myapp
Step 2: After creating your project folder i.e. myapp, move to it using the following command:
cd myapp
Project structure: Our project structure will look like this.
Step 3: After creating the ReactJS application, Install the firebase module using the following command:
npm install firebase@8.3.1 --save
Step 4: Go to your firebase dashboard and create a new project and copy your credentials.
const firebaseConfig = {
apiKey: "your api key",
authDomain: "your credentials",
projectId: "your credentials",
storageBucket: "your credentials",
messagingSenderId: "your credentials",
appId: "your credentials"
};
Step 5: Initialize the Firebase into your project by creating Firebase.js file with the following code.
Firebase.js
import firebase from 'firebase'; Â Â const firebaseConfig = { Â Â Â Â // Your credentials }; Â Â firebase.initializeApp(firebaseConfig); var auth = firebase.auth(); var provider = new firebase.auth.GoogleAuthProvider();Â export {auth , provider}; |
Step 6: Go to your firebase dashboard and Enable the google sign-in method as shown below.Â
Step 7: Now install the npm package i.e. react-firebase-hooks using the following command.
npm i react-firebase-hooks
This package helps us to listen to the current state of the user.
Step 8: Create two files i.e. login.js and main.js with the following code.
login.js
import React from 'react'; import {auth , provider} from './firebase.js';   const Login = () => {       // Sign in with google     const signin = () => {         auth.signInWithPopup(provider).catch(alert);     }           return (         <div>             <center>                 <button style={{"marginTop" : "200px"}}                 onClick={signin}>Sign In with Google</button>             </center>         </div>     ); }   export default Login; |
Main.js
import React from 'react'; import {auth} from './firebase';   const Mainpage = () => {       // Signout function     const logout = () => {         auth.signOut();     }           return (         <div>             Welcome                           {                 auth.currentUser.email             }             <button style={{"marginLeft" : "20px"}}             onClick={logout}>                 Logout             </button>         </div>     ); }   export default Mainpage; |
Step 8: Finally Import all required files in App.js file as shown below.
App.js
Javascript
import React from 'react'; import {auth} from './firebase'; import {useAuthState} from 'react-firebase-hooks/auth'; import Login from './login'; import Mainpage from './main'; Â Â function App() { Â Â const [user] = useAuthState(auth); Â Â return ( Â Â Â Â user ? <Mainpage/> : <Login/> Â Â ); } Â Â export default App; |
Step to Run Application: Run the application using the following command from the root directory of the project:
npm start
Output: Now open your browser and go to http://localhost:3000/, you will see the following output:
