CODE EXAMPLE FOR JAVASCRIPT

FTP download local file

var Client = require('ftp');
  var fs = require('fs');
 
  var c = new Client();
  c.on('ready', function() {
    c.get('foo.txt', function(err, stream) {
      if (err) throw err;
      stream.once('close', function() { c.end(); });
      stream.pipe(fs.createWriteStream('foo.local-copy.txt'));
    });
  });
  // connect to localhost:21 as anonymous
  c.connect();