gistfile1.js

// html code:

<form method='post' action='/files' enctype="multipart/form-data">                    
  <input type='file' name='files' multiple>                                           
  <input type='submit' name='upload'>                                                 
</form>


// node code:
app.post('/files', function(req, res, next){
    if(req.files){
        user_file.save(function(err){
            console.log(user_file)
        });
    } else {
        next();
    }
    req.on('complete', function(err, fields, files){
        console.log('done')
    })
});