javascript - How to upload,save and display file with node and express -

i new in nodejs , trying make form node , express can upload save , display image or file. have app.post information works.

i trying did not work. think missing dont know tried many answers nothing worked me. hope can me.

thanks in advanced.

there code

var express = require('express'); var bodyparser = require('body-parser'); var fs = require('fs'); var busboy = require('busboy'); var path = require('path');  var app = express();  app.use(bodyparser());  app.get('/information', function(req,res) {   var html = '<form action="/information" method="post">' +            'enter name:' +            '<input type="text" name="username" placeholder="..." />' +            '<br>' +            '<button type="submit">submit</button>' +         '</form>';                res.send(html); });  app.post('/information', function(req, res){   var username = req.body.username;   var html = 'hello: ' + username + '.<br>' +          '<a href="/information">try again.</a>';   res.send(html); });   var frm = '<form action="/file" method="post" enctype="multipart/form-    data">' + '<br/>'+         '<input type="file" name="uploadfile" />' + '<br/>' +          '<input type="submit" />' + '</form>';  app.get('/file',function(req,res){     res.send(frm); });  app.post('/file',function(req,res){      fs.readfile(req.body.uploadfile.path , function (err, data) {         var filename = req.body.uploadfile.name;         if(!filename){             console.log("there error")             res.redirect("/file");             res.send();         } else {            var newpath = "/uploads/" + filename;            /// write file uploads folder           fs.writefile(newpath, data, function (err) {              /// let's see             res.redirect("/uploads/" + filename);           });         }     }); }); /// show files app.get('/uploads/:file', function (req, res){      file = req.params.file;     var img = fs.readfilesync("/uploads/" + file);     res.send(img, 'binary'); });app.listen(process.env.port || 3003); 

there's few things wrong here:

• the enctype value in form has spaces in middle (multipart/form- data)
• the busboy middleware not being used @ all, body-parser middleware being used, not support multipart/form-data.
• busboy not populate req.body. if want kind of api, should @ multer, built on busboy provides req.body.