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Created July 26, 2012 07:35
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Short tutorial on how to use Express and node-mysql
// Module dependencies
var express = require('express'),
mysql = require('mysql');
// Application initialization
var connection = mysql.createConnection({
host : 'localhost',
user : 'root',
password : 'password'
var app = module.exports = express.createServer();
// Database setup
connection.query('CREATE DATABASE IF NOT EXISTS test', function (err) {
if (err) throw err;
connection.query('USE test', function (err) {
if (err) throw err;
connection.query('CREATE TABLE IF NOT EXISTS users('
+ 'PRIMARY KEY(id),'
+ 'name VARCHAR(30)'
+ ')', function (err) {
if (err) throw err;
// Configuration
// Main route sends our HTML file
app.get('/', function(req, res) {
res.sendfile(__dirname + '/index.html');
// Update MySQL database'/users', function (req, res) {
connection.query('INSERT INTO users SET ?', req.body,
function (err, result) {
if (err) throw err;
res.send('User added to database with ID: ' + result.insertId);
// Begin listening
console.log("Express server listening on port %d in %s mode", app.address().port, app.settings.env);
<!doctype html>
<script type="text/javascript" src=""></script>
<script type="text/javascript">
$(document).ready(function () {
$('#user-submit').click(function () {
var payload = {
name: $('#user-name').val()
url: "/users",
type: "POST",
contentType: "application/json",
processData: false,
data: JSON.stringify(payload),
complete: function (data) {
<h3>Enter a username to enter into the database:</h3>
<input id="user-name" type="text" />
<input id="user-submit" type="submit" />
<p id="output"></p>
"name": "reddit-node-mysql"
, "description": "A demo of how to use Express and MySQL together"
, "author": "Clarence Leung <github@clarle>"
, "version": "0.0.1"
, "private": true
, "dependencies": {
"express": "~2.5",
"mysql": "~2.0"
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Nice easy to follow demo

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Thanks for this 👍 And ohadpartuck if you wanted to move connection into a separate file you could just place it in, say, connection.js and in that file module.exports = connection then connection = require('./connection.js') in your main app.js file.

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Its not working for me, So I just change

res.sendfile( '/index.html' , {root:__dirname}); //instead of res.sendfile( __dirname + '/index.html' );

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How do you pass an object to the view in a regular page load? NOT an ajax call. That object (of course) came from the mysql database. I'd imagine its something like this:

app.get('/', function(req, res) {
res.sendFile(__dirname + '/public/index.html', {fromdb: 'list of records'});

let me know how to do this. thanks.

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I get this error:
jquery.min.js:4 XMLHttpRequest cannot load file:///C:/api/users/insert. Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, https, chrome-extension-resource.

How do I fix it?

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But i want to bind data from mysql to html page.

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kazup01 commented Feb 11, 2017

Thanks nice demo!

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nice demo for we bigginers

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ctosid commented Jun 26, 2018

Sorry im starting out with node so pardon me!..
Don't you think there need to be statement which closes the connection like connection.end()

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