Node.js / Socket.IO中的基本AI

I'm creating a small game in Node.js/Socket.IO and need some advice on creating the AI. The code I have below is a real quick example I came up with but it's so fast the player doesn't even see the enemy move on the client-side. Am I on the right lines with this approach or is there a better way I should be doing it?I'm creating a small game in Node.js/Socket.IO