How to upload a file using Node js.?

Here, we will write a program to upload a file in node js. We will use multer library to perform the function.

app.js file

const multer = require('multer');
const express = require('express');
const ejs = require('ejs');

const app = express();
app.set('view engine', 'ejs')

const storage = multer.diskStorage({
  destination: function (req, file, cb) {
    cb(null, 'public/uploads/') // specify the directory where uploaded files will be saved
  filename: function (req, file, cb) {
    cb(null, + '-' + file.originalname) // specify the filename format

const upload = multer({ storage: storage });

app.get('/upload', function(req, res) {
  app.listen(3000, () => {
    console.log('Server listening on port 3000');
  });'/upload', upload.single('file'), function(req, res) {
    res.send('File uploaded successfully!');

upload.ejs file in views directory

<!DOCTYPE html>
<html lang="en">
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <form action="/upload" method="POST" enctype="multipart/form-data">
        <input type="file" name="file">
        <input type="submit" value="Upload">