Front-End Web Development: The Big Nerd Ranch Guide

Sending Data to the Server

The first method you will create is the add method to store customer order data on the remote web service.

Add a prototype method to RemoteDataStore. Like DataStore’s add method, it will accept arguments called key and val. Note that it is not required for you to use the same parameter names, but it is good practice to keep them consistent.

...
  function RemoteDataStore(url) {
    ...
  }

  RemoteDataStore.prototype.add = function (key, val) {
    // Code will go here
  };

  App.RemoteDataStore = RemoteDataStore;
  window.App = App;
...

Using jQuery’s $.post method

Inside the RemoteDataStore module, you will use jQuery’s $.post method. This method sends a POST request in the background as an XMLHttpRequest object ...