This is a very dumb little thing I threw together in a few minutes. This is a digital version of a “thousand monkeys at a thousand typewriters” eventually re-creating the entire works of Shakespeare. In this case, it’s one monkey and the typewriter will only let him type the correct next letter, so he can jam on the keyboard all over the place, but only the correct letter will be added to the sequence when he hits it. I figured that would make it a little easier for the little guy. No monkeys were harmed during the creation of this JavaScript.
To give this a go, put some text in the ‘masterpiece’ textarea, and hit “Go monkey go!”