Help a JS virgin find that sweet spot

I'm practicing JS by trying to make a rock, paper, scissor game. 

I have failed.

Can /prog/ help a nigga out?

http://pastebin.com/2Sq06a0c

Everything is appreciated, just keep in mind I'm new as fuck to programming.

prompt() returns a string
player1 + player2 === "12" // true
player1 + player2 === 3 //nope
ihbt

>>8
The wonders of dynamic typing!