Cannot connect to mysql using Node js - mysql

Question

I am trying to connect to mysql but I am getting the following error :
"Error: ER_ACCESS_DENIED_ERROR: Access denied for user ' root'#'localhost' (using password: YES)"
But when I connect using mysql command line client I am able to connect to mysql.
Here is my config.js file where I have defined the connectivity settings :
//config.js
var mysql = require('mysql');
var connection = mysql.createConnection({
host : 'localhost',
port : '3306',
user : ' root',
password : 'root',
database : 'world'
});
module.exports = connection;
I am trying to connect to the db in this file :
// userController.js
var jwt = require('jwt-simple');
var connection = require("../config.js");
var auth = {
getAll: function(req, res) {
console.log("in user comtroller");
console.log(connection);
connection.connect(function(err) {
// connected! (unless `err` is set)
if(err){
console.log("Failed to connect to mysql. Error : "+err);
}
else{
console.log("connection Successful..!!");
}
});
res.send("going good");
}
}
module.exports = auth;