CODEWITHSUNDEEP
mysqlhtmlnode.js
Chandan Dey
Chandan Dey

Reputation: 31

HTML5 page connect mysql database with node.js

I have tried with Joel solution but getting some error. Can anybody tell me where is the problem.

app.js

var app = require('http').createServer(handler)
, io = require('socket.io').listen(app)
, fs = require('fs')
, mysql = require('mysql')

var client = mysql.createConnection({
    host: 'localhost',
    user: 'root',
    password: '',
});

client.connect();

app.listen(3232);

function handler (req, res) {
    fs.readFile(__dirname + '/index.html',
    function (err, data) {
        if (err) {
            res.writeHead(500);
            return res.end('Error loading index.html');
        }

        res.writeHead(200);
        res.end(data);
    });
}

io.sockets.on('connection', function (socket) {
    socket.on('login', function(usr, pass){
        var TEST_DATABASE = 'mysqltest';
        var TEST_TABLE = 'users';

        client.query('USE '+TEST_DATABASE);

        client.query('SELECT name FROM '+TEST_TABLE+' WHERE user = "'+usr+'" AND password = "'+pass+'"', function(err, results) {
            if (err) throw err;
            console.log(results[0]); // [{1: 1}]
            socket.emit('retuLogIn',results[0]['name']);
        });

    });
    socket.on('disconnect', function(){
        console.log('Server has disconnected');
    });
});

index.html

<html>
    <title>WebSocket Client Demo [socket.io]</title>
    <script src="http://localhost:3232/socket.io/socket.io.js"></script>
    <script>
    function connect() {

        try
        {
            var socket = io.connect('http://localhost:3232/');
            socket.on("connect",function(){
                document.getElementById('status').innerHTML ="Browser has connected to the app server";
                socket.emit('login', document.getElementById('txtUser').value,
                document.getElementById('txtPass').value);

            });
            socket.on('retuLogIn', function (data) {
                document.getElementById('status').innerHTML = 'Welcome '+data;
            });
        }
        catch(err)
        {
            document.getElementById('status').innerHTML = err.message;
        }
    }
    </script>
    <body>
        <h1>WebSocket Client Demo</h1>
        <div><p id="status">Enter user and password to Log-In</p></div>
        <label>User :</label>
        <input id="txtUser" type="text" maxlength="10" />
        <label>Password :</label>
        <input id="txtPass" type="text" maxlength="10" />
        <button id="connect" onClick='connect()'/>Log-In</button>
    </body>
</html>

When i try to run the app.js file within node.js it will give me the following error:

C:\Program Files (x86)\nodejs>node "C:\Program Files (x86)\nodejs\app.js" info - socket.io started

C:\Program Files (x86)\nodejs\app.js:6 var client = mysql.createConnection({ ^ TypeError: Object # has no method 'createConnection' at Object. (C:\Program Files (x86)\nodejs\app.js:6:24) at Module._compile (module.js:449:26) at Object..js (module.js:467:10) at Module.load (module.js:356:32) at Function._load (module.js:312:12) at module.js:487:10 at EventEmitter._tickCallback (node.js:238:9)

C:\Program Files (x86)\nodejs>

I can not understand where is the problem. I have checked mysql module installed.

Please help to sort-out the problem.

Upvotes: 0

Views: 5657

Answers (1)

nelsonic
nelsonic

Reputation: 33154

@Chandan, I had the same error (briefly)

TypeError: Object #<Object> has no method 'createConnection'

Checked https://github.com/felixge/node-mysql but no one else is reporting it as an issue. Installing the latest (alpha) version of the node mysql module solved the problem:

npm install [email protected]

YMMV. If you figure it out without updating your mysql module please inform us.

Upvotes: 4

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