Hello friends, In this post i am going to show you a basic example of file uploading system in nodejs,
Make sure you already have npm, nodejs, express installed in your system.

Follow the below instruction to installing all packages in ubuntu

sudo aptget install nodejs

sudo aptget install npm

Installing and configuring express follow below instruction given on express official website  http://expressjs.com/starter/installing.html

Technology used: NodeJs, expressJs, bootstrap, jquery

Lets start step by step creating files.

Step-1: Create package.json file


"name": "NodejsFileUpload",
"version": "0.0.1",
"private": true,
"scripts": {
"start": "node app.js"
"dependencies": {
"express": "~3.4.0",
"jade": "*"
"engines": {
"node": "0.10.x"

Step-2: Create view file here i am using jade templating engine to create view.
learn more about jade from here http://jade-lang.com/


extends layout
block content
h3 Simple file upload in nodeJs with progress bar
form(name="fileUpload", action="/fileUpload",enctype="multipart/form-data", method="post",role="form", class="form-inline")
label Choose image to upload:
input(name="uploadfile", type="file", id="myFile")
span(style="color:red") Upload only image file (PNG, JPEG, GIF)
input(value="UPLOAD", type="button", class="btn btn-primary")
div(class="progress-bar progress-bar-striped active" role="progressbar" aria-valuenow="45" aria-valuemin="0" aria-valuemax="100") 0%
h3 List all uploaded files

Step-3 Create another view file under view folder to show list of uploaded files.


extends layoutblank
block content
each value in fileList
a(href="./files/"+value, target="_blank")
img(src="./files/"+value, height=200, width=200)
span #{value}
a(href="javascript:void(0)",file=value, id="delete") Delete

Step-4: Create client side js file under public/js folder to write jquery
Note: The progress bar requires modern browsers that support HTML5 tags and XMLHttpRequest is a new HTML5 feature that adds more functionality to AJAX requests for transferring data between a client and a server.


$(function() {
$("input[type='button']").click(function() {
var formData = new FormData();
if($('#myFile').val()=='') {
alert("Please choose file!");
return false;
var file = document.getElementById('myFile').files[0];
formData.append('uploadfile', file);
var xhr = new XMLHttpRequest();
xhr.open('post', 'fileUpload/', true);
xhr.upload.onprogress = function(e) {
if (e.lengthComputable) {
var percentage = (e.loaded / e.total) * 100;
$('div.progress div').css('width', percentage.toFixed(0) + '%');
$('div.progress div').html(percentage.toFixed(0) + '%');
xhr.onerror = function(e) {
alert('An error occurred while submitting the form. Maybe your file is too big');
xhr.onload = function() {
var file = xhr.responseText;
$('div.progress div').css('width','0%');
showMsg("alert alert-success", "File uploaded successfully!");
return false;
function showMsg(className, msg) {
$("#msg").fadeOut(3000,function() {
$(document).on('click','#delete',function() {
var file = $(this).attr("file");
showMsg("alert alert-danger", "File deleted successfully!")

Step:5- Now turn for server side coding. Create file config.js file write all configuration here to set the path of TEMP folder and directory where have to upload files


exports.TEMPDIR = './public/temp';
exports.UPLOADDIR = './public/files/';

Step-6- Now turn to create main file which will create server for you & write file upload and delete code here


* Author: Rohit Kumar
* Date: 24-07-2014
* Website: iamrohit.in
* App Name: Node File Upload
* Description: File upload module in nodeJs with progress bar
* Module dependencies.
var config = require('./config');
var express = require('express');
var routes = require('./routes');
var user = require('./routes/user');
var http = require('http');
var path = require('path');
var fs = require('fs');
var app = express();
// all environments
app.set('port', process.env.PORT || 5000);
app.set('views', __dirname + '/views');
app.set('view engine', 'jade');
app.use(express.static(path.join(__dirname, 'public')));
process.env.TMPDIR = config.TEMPDIR;
// development only
if ('development' == app.get('env')) {
app.get('/', function(req, res) {
fs.readdir(config.UPLOADDIR,function(err, list) {
throw err;
app.get('/deleteFile/:file', function(req, res){
var targetPath = config.UPLOADDIR+req.param("file");
fs.unlink(targetPath,function(err) {
if(err) {
res.send("Error to delete file: "+err);
} else {
res.send("File deleted successfully!");
app.get('/users', user.list);
app.get('/fileUpload', routes.fileUpload);
app.get('/filelist', function(req, res) {
fs.readdir(config.UPLOADDIR,function(err, list) {
throw err;
app.post('/fileUpload', function(req, res) {
var tempPath = req.files.uploadfile.path;
var targetPath = config.UPLOADDIR+req.files.uploadfile.name;
fs.rename(tempPath, targetPath, function(err) {
if(err) {
//res.send("Error found to upload file "+err);
var msg = "Error found to upload file "+err;
var type="error";
} else {
//res.send("<b>File uploaded to "+targetPath+" ("+req.files.uploadfile.size +" bytes)</b>");
var fileSize = req.files.uploadfile.size/1024;
var msg = "File uploaded to "+targetPath+" ("+(fileSize.toFixed(2)) +" kb)";
var type="success";
http.createServer(app).listen(app.get('port'), function(){
console.log('Express server listening on port ' + app.get('port'));

Just click on demo button to see the live working demo and also you can download source code by clicking on source code button.

Hope this will help you to create file uploading system in nodejs..!!

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