A couple of revisions

- A couple of revisions here, as you said in your presentation, pull out all of the elements from the DOM and store them in variables at the top of the page;
- I like the functions you split your code into - makes the flow easy to understand; 
- Have added the line to clear the input box; 
- I also changed it to change and opposed to click - the event is fired when the element looses focus (this means you can press enter as well as click the guess button;