Skip to content

Instantly share code, notes, and snippets.

@clarle
Created July 26, 2012 07:35
  • Star 81 You must be signed in to star a gist
  • Fork 34 You must be signed in to fork a gist
Star You must be signed in to star a gist
Save clarle/3180770 to your computer and use it in GitHub Desktop.
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('
+ 'id INT NOT NULL AUTO_INCREMENT,'
+ 'PRIMARY KEY(id),'
+ 'name VARCHAR(30)'
+ ')', function (err) {
if (err) throw err;
});
});
});
// Configuration
app.use(express.bodyParser());
// Main route sends our HTML file
app.get('/', function(req, res) {
res.sendfile(__dirname + '/index.html');
});
// Update MySQL database
app.post('/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
app.listen(3000);
console.log("Express server listening on port %d in %s mode", app.address().port, app.settings.env);
<!doctype html>
<html>
<head>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function () {
$('#user-submit').click(function () {
var payload = {
name: $('#user-name').val()
};
$.ajax({
url: "/users",
type: "POST",
contentType: "application/json",
processData: false,
data: JSON.stringify(payload),
complete: function (data) {
$('#output').html(data.responseText);
}
});
});
});
</script>
</head>
<body>
<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>
</body>
</html>
{
"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"
}
}
@francistito
Copy link

nice demo for we bigginers

@ctosid
Copy link

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()

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment