script.js

<script src="https://www.gstatic.com/firebasejs/live/3.0/firebase.js"></script>
<script src="https://code.jquery.com/jquery-1.10.2.js"></script>
<script src="https://code.jquery.com/ui/1.11.2/jquery-ui.js"></script>
<script>
  var $ = jQuery;
  var timestamp = Number(new Date()); //this will server as a unique ID for each user
  var form = document.querySelector("form");
  var config = {
    apiKey: "API_KEY",
    authDomain: "app-id.firebaseapp.com",
    databaseURL: "https://app-id.firebaseio.com",
    storageBucket: "app-id.appspot.com",
  };
  firebase.initializeApp(config);
      var database = firebase.database();
      form.addEventListener("submit", function(event) {
        event.preventDefault();
        var ary = $(form).serializeArray();
        var obj = {};
        for (var a = 0; a < ary.length; a++) obj[ary[a].name] = ary[a].value;
          console.log("JSON",obj);
        var file_data = $('#uploadZip').prop('files')[0];
        var storageRef = firebase.storage().ref(timestamp.toString());       
        storageRef.put(file_data);
        var form_data = new FormData();                  
        form_data.append('file', file_data);                           
        firebase.database().ref('users/' + timestamp).set(obj);
        database.ref('users/' + timestamp).once('value').then(function(snapshot) {
        console.log("Received value",snapshot.val());
        )};
      });
    </script>