node-file-upload.js

const express = require("express")
const path = require("path")
const multer = require("multer")
const app = express()
    
app.set("views",path.join(__dirname,"views"))
app.set("view engine","ejs")
    
var storage = multer.diskStorage({
    destination: function (req, file, cb) {
        cb(null, "uploads")
    },
    filename: function (req, file, cb) {
      cb(null, file.fieldname + "-" + Date.now()+".jpg")
    }
  })
       
const maxSize = 1 * 1000 * 1000;
var upload = multer({ 
    storage: storage,
    limits: { fileSize: maxSize },
    fileFilter: function (req, file, cb){
    
        // Set the filetypes, it is optional
        var filetypes = /jpeg|jpg|png/;
        var mimetype = filetypes.test(file.mimetype);
  
        var extname = filetypes.test(path.extname(
                    file.originalname).toLowerCase());
        
        if (mimetype && extname) {
            return cb(null, true);
        }
      
        cb("Error: File upload only supports the "
                + "following filetypes - " + filetypes);
      } 
  
}).single("mypic");       
  
app.get("/",function(req,res){
    res.render("index");
})
    
app.post("/upload-file",function (req, res, next) {
    upload(req,res,function(err) {
        if(err) {
            res.send(err)
        }
        else {
            res.send("Success, Image uploaded!")
        }
    })
})
app.listen(5000,function(error) {
    if(error) throw error
        console.log("Server created Successfully on PORT 5000")
})