mdt5_webApplicationen/appV0/index.js

      //Get elements

      const txtEmail = document.getElementById('InputEmail1');
      const txtPassword = document.getElementById('InputPassword1');
      const btnLogin = document.getElementById('btnLogin');
      const btnSignUp = document.getElementById('btnSignUp');
      const btnLogout = document.getElementById('btnLogout');

      // Add login event
      btnLogin.addEventListener('click', e => {
        // Get email and pass
        const email = txtEmail.value;
        const pass = txtPassword.value;
        const auth = firebase.auth();
        // Sign in
        const promise = auth.signInWithEmailAndPassword(email, pass);
        promise.catch(e => console.log(e.message));
        promise.then(function (user) {
          // success
          console.log("Email: " + user.email);
          window.location.href = "notizenEintrag.html";
        })
      });

      // Add signup event
      btnSignUp.addEventListener('click', e => {
        // Get email and pass
        const email = txtEmail.value;
        const pass = txtPassword.value;
        const auth = firebase.auth();
        // Sign in
        const promise = auth.createUserWithEmailAndPassword(email, pass);
        promise.catch(e => console.log(e.message));
        promise.then(function (user) {
          // success
          console.log("Email: " + user.email);
          window.location.href = "notizenEintrag.html";
        })
        alert("SignUp gedrückt");

      });

      btnLogout.addEventListener('click', e => {
        firebase.auth().signOut();

      });