Problem 2) For this problem we want you to replace all the jQuery code in the submit-button and keyboard event handlers in canvasWithTimer.js. This will involve making AJAX HTTP POST requests using javascript's native xMLHttpRequest objects instead of jQuery's $.post ) method. These are described both in the supplied AJAX Requests article and in the W3 Schools AJAX reference. (Note the article also desribes even newer approaches using the .then () promises syntax but we will not use them here. We will study javascript promises later in the course.) After completing this you should be able to make AJAX POST requests without using jQuery