firebase-authentication Getting started with firebase-authentication How to Create Password Based User

Example

You can use Firebase Authentication to let your users authenticate with Firebase using their email addresses and passwords, and to manage your app's password-based accounts.

In this example, we use these steps to set it up for our Android project which is based on JavaScript.

But before doing so, this is what needs to get done before:

1. Add Firebase to your JavaScript project.
2. If you haven't yet connected your app to your Firebase project, do so from the Firebase console.
3. Enable Email/Password sign-in: In the Firebase console, open the Auth section. On the Sign in method tab, enable the Email/password sign-in method and click Save.

There are 2 auth methods required to create a password based user with displayName, namely .createUserWithEmailAndPassword and .updateProfile. I have nested the latter and created a single function which fires both of these methods for ease of use.

  function registerPasswordUser(email,displayName,password,photoURL){
    var user = null;
    //NULLIFY EMPTY ARGUMENTS
    for (var i = 0; i < arguments.length; i++) {
      arguments[i] = arguments[i] ? arguments[i] : null;
    }
    auth.createUserWithEmailAndPassword(email, password)
    .then(function () {
      user = auth.currentUser;
      user.sendEmailVerification();
    })
    .then(function () {
      user.updateProfile({
        displayName: displayName,
        photoURL: photoURL
      });
    })
    .catch(function(error) {
      console.log(error.message,7000);
    });
    console.log('Validation link was sent to ' + email + '.');
  }