Node: Simple Express get using regular expressions

gistfile1

app.get(/\/users\/(\d*)\/?(edit)?/,function(req, res){
   //   /users/10
   //   /users/10/
   //   /users/10/edit

    var message = "user #" + req.params[0] + "'s profile";

    if(req.params[1] === 'edit'){
        message = "Editing " + message;
    } else {
        message = "Viewing " + message;
    }
    res.send(message);
});