Firebase Integration With Web

// Your web app's Firebase configuration
// For Firebase JS SDK v7.20.0 and later,
// measurementId is optional
var firebaseConfig = {
  apiKey: "AIzaSyAv_PFCLcflPPO5NYtXkz5r-H9J2IEQzUQ",
  authDomain: "login-demo-a03bf.firebaseapp.com",
  projectId: "login-demo-a03bf",
  storageBucket: "login-demo-a03bf.appspot.com",
  messagingSenderId: "831896060677",
  appId: "1:831896060677:web:a0616c95abc1bcdedf6d6c",
  measurementId: "G-XWHF8K6XSV",
};

// Initialize Firebase
firebase.initializeApp(firebaseConfig);

const auth = firebase.auth();

// Signup function
function signUp() {
  var email = document.getElementById("email");
  var password = document.getElementById("password");

  const promise = auth.createUserWithEmailAndPassword(
    email.value,
    password.value
  );
  promise.catch((e) => alert(e.message));
  alert("SignUp Successfully");
}

// SignIN function
function signIn() {
  var email = document.getElementById("email");
  var password = document.getElementById("password");
  const promise = auth.signInWithEmailAndPassword(
            email.value, password.value);
  promise.catch((e) => alert(e.message));
}

// SignOut
function signOut() {
  auth.signOut();
  alert("SignOut Successfully from System");
}

// Active user to homepage
firebase.auth().onAuthStateChanged((user) => {
  if (user) {
    var email = user.email;
    alert("Active user " + email);
  } else {
    alert("No Active user Found");
  }
});