error : connect ECONNREFUSED

I am running a node app with mysql as my database(also using sequelize as ORM). Whenever I run the "app.js" file with "node" command, I get an error:

{ [Error: connect ECONNREFUSED 127.0.0.1:3306] code: 'ECONNREFUSED', errno: 'ECONNREFUSED', syscall: 'connect', address: '127.0.0.1', port: 3306, fatal: true }

my code in the app.js file:

var  mysql = require("mysql");

var connection = mysql.createConnection({
  host: "localhost",
  user: "root",
  password: "password",
  database: "openshare"
});

connection.connect(function(err){
  if(err){
    console.log(err);
  } else {
    console.log("no errors");
  }
});

via sespler