Referencing a JavaScript value before it is declared - can someone explain this

Question

I\'m hoping someone can explain to me why the below JavaScript/HTML will show \"door #2\" when the HTML is viewed in a browser:

Answer 1

function testprint is global to the page. the testprint = function... assigns a variable, that I'm not sure exactly the entire scope of, but I get the idea that it's not added to the function table dictionary the way the first one is.