How to get user info from mongodb in node.js

How to get user info from mongodb in node.js

Totally new to mongo, I've been checking examples for hours, Trying to
check if a user exists in this collection:
{ "name" : "chrispy", "pass" : "xxxx", "_id" :
ObjectId("5221b29b69f9e9b11a000001") }
But cannot match name and get the results, ive tried numerous examples,
and no luck. onRegister is called and data.name and data.password are
filled. Once I can match the name, I'll match the password. but cant even
get as far as matching the user name. console.log doesn't get called
either. Help = 1000 thankyou's!
function onRegister(data) {
var name,pass;
name = data.name;
pass = data.pass;
Mongo.connect('mongodb://127.0.0.1:27017/main', function(err, db) {
if(err) throw err;
var collection = db.collection('users');
// check if user exists
var doc = collection.findOne({'name' : name}, function(err,doc){
if(err) throw err;
if(doc) {
var myName = doc.name;
console.log("doc.name "+tojson(myName)+ " name "+name); //
never called even when name is correct
if(tojson(myName) == name) {
// now check password, but runtime never gets here
}
} else {
// runtime never gets here either
}
});
}