terminal: % node example.js -bash: fg: no such job

In Terminal, when I try to run % node example.js why do I get -bash: fg: %: no such job?

I've installed Node.js. I've saved example.js with the example code:

var http = require('http');
http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.end('Hello World\n');
}).listen(1337, '127.0.0.1');
console.log('Server running at http://127.0.0.1:1337/');

This is following the webserver example on the landing page of http://nodejs.org/.