// --- View Model.
function AppViewModel() {

  // Setting This
  var self = this

  // Declaring Observables
  this.locationInput = ko.observable("");

  this.locationList = ko.observablearray([]);

<script src="./js/knockout.js"></script>
  <script src="./js/jquery.min.js"></script>
  <script src="./js/app.js"></script>