JavaScript

<div class="container">
        <header>

            <h1> Memory Game
         </h1>
        </header>

        <ul class="deck" id="card-deck">
            <li></li>
        </ul>

    </div>

<pre>//Storing the mask images


var masks = ["/images/1.jpg", "/images/2.jpg", "/images/3.jpg", "/images/4.jpg", "/images/12.jpg", "/images/6.jpg", "/images/1.jpg", "/images/2.jpg", "/images/3.jpg", "/images/4.jpg", "/images/12.jpg", "/images/6.jpg", ];

// Shuffling the array using the Fisher Yates
function shuffleMasks(masks) {
    for (var i = masks.length - 1; i > 0; i--) {
        var j = Math.floor(Math.random() * (i + 1));
        var temp = masks[i];
        masks[i] = masks[j];
        masks[j] = temp;
    }
}




// Show modal when page loads and close me piece
function showModal() {
    modal.style.display = "block";
    $('#closeMe').hide().delay(10000).show('fast')
}

// Close modal after the X has been clicked
function closeModal() {
    modal.style.display = "none";
}



// JQuerry goes here

$(document).ready(function () {
    window.modal = document.getElementById('myModal');
    shuffleMasks(masks);
    console.log(masks)
        //    showModal();
    for (var i = 0; i < masks.length; i++) {
        $(".deck").append('<div class="card"> <img class="card" src="' + masks[i] + '"/></div>');

    }
    $(".deck").on('click', '.card', function () {
        var cardVisible = $('.card img:visible').length; //Get the number of visible img

        if (cardVisible >= 2) $('.card img').hide(); //If 2 or more, hide all
        var open = $('img').attr('id', 'open');

        $(this).find("img").show() //Show the image



        $(".card").on('click', function () {
            var source = $(this).find("img").attr('src')
            alert(source);
            if (source === source) {
                $('.card img').hide();
            }



        })







    })

var http_errors = require('http-errors');
   var express = require('express');
   var path = require('path');
   var favicon = require('serve-favicon');
   var logger = require('morgan');
   var passport = require('passport');
   var session = require('express-session');
   var cookieParser = require('cookie-parser');
   var bodyParser = require('body-parser');

   var api = require('./routes/api');
   var authenticate = require('./routes/authenticate')(passport);

   var app = express();

   app.use(cookieParser('super duper secret'));
   app.use(session({
       secret: 'super duper secret',
       resave: true,
       saveUninitialized: true
   }));
   app.use(logger('dev'));
   app.use(bodyParser.json());
   app.use(bodyParser.urlencoded({ extended: false }));
   app.use(express.static(path.join(__dirname, 'public')));
   app.use(passport.initialize());
   app.use(passport.session());

   // view engine setup
   app.set('views', path.join(__dirname, 'views'));
   app.set('view engine', 'ejs');

   app.use('/api', api);
   app.use('/auth', authenticate);

   //Initialize passport
   var initPassport = require('./passport-init');
   initPassport(passport);

   module.exports = app;

var express = require('express');
    var router = express.Router();
    
    router.use(function(req, res, next){
        
        if(req.method === "GET"){
            //continue to the next middleware or request handler
            return next();
        }
        
        if (!req.isAuthenticated()){
            //user not authenticated, redirect to login page
            return res.redirect('/#login');
        }
        
        //user authenticated continue to next middleware or handler
        return next();
    });
    
    //api for all posts
    router.route('/posts')
    
        //returns all posts
        .get(function(req, res){
        
            //temporary solution
            res.send({message: 'TODO return all posts'});
        })
    
        //posts all posts
        .post(function(req, res){
        
            //temporary solution
            res.send({message: 'TODO create a new post'});
        })
    
    module.exports = router;

var express = require('express');
    var router = express.Router();
    
    module.exports = function(passport){
    
    	//sends successful login state back to angular
    	router.get('/success', function(req, res){
    		res.send({state: 'success', user: req.user ? req.user : null});
    	})
    
    	//sends failure login state back to angular
    	router.get('/failure', function(req, res){
    		res.send({state: 'failure', user: null, message: "Invalid username or password"});
    	})
    
    	//log in
    	router.post('/login', passport.authenticate('login', {
    		successRedirect: '/auth/success',
    		failureRedirect: '/auth/failure'
    	}))
    
    	//sign up
    	router.post('/signup', passport.authenticate('signup', {
    		successRedirect: '/auth/success',
    		failureRedirect: '/auth/failure'
    	}))
    
    	//log out
    	router.get('/signout', function(req, res) {
    		req.logout();
    		res.redirect('/');
    	});
    
    	return router;
    }

var LocalStrategy   = require('passport-local').Strategy;
    var bCrypt = require('bcrypt-nodejs');
    //temporary data store
    var users = {};
    module.exports = function(passport){
    
    	// Passport needs to be able to serialize and deserialize users to support persistent login sessions
    	passport.serializeUser(function(user, done) {
            
            //tell passport which id to use for user
    		console.log('serializing user:',user.username)
    		return done(null, user.username);
    	})
    
    	passport.deserializeUser(function(username, done) {
            User.findById(username, function(err, user){
    		return done(err,users[username]);
            })
    	})
    
    	passport.use('login', new LocalStrategy({
    			passReqToCallback : true
    		},
    		function(req, username, password, done) { 
    
                if(!users[username]){
                    return done('user not found',false);
                }
            
                if(!isValidPassword (users[username],password)){
                    return done('invalid password', false);
                }
            
                console.log('sucessfully logged in')
    			return done(null, users[username]);
    		}
    	))
    
    	passport.use('signup', new LocalStrategy({
    			passReqToCallback : true // allows us to pass back the entire request to the callback
    		},
    		function(req, username, password, done) {
            
                if(users[username]){
                    return done('username already taken', false);
                }
                
                users[username] = {
    				username: username,
    				password: createHash(password)
    			}
            
                console.log('sucessfully signed in')
                console.log(users[username])
    			return done(null, users[username]);
    		}
    	))
    
        var isValidPassword = function(user, password){
    		return bCrypt.compareSync(password, user.password);
    	}
        
    	var createHash = function(password){
    		return bCrypt.hashSync(password, bCrypt.genSaltSync(10), null);
    	}
    };

var result = " ";

var i = 0;

do {
    i += 1;
    result = result + i;
} while (i < 5);

document.write(result);
// Output 12345

ctx.font = '90px Arial'