Problems with response after GET request

It's because you're parsing the data into JSON as it arrives. In Node.js it's arriving in one big chunk but in Espruino it's a few smaller ones.

Do like it suggests here and do stuff on the close event, not the data one: http://www.espruino.com/Internet#client

require("http").get("http://www.espruino.com", function(res) {
  var contents = "";
  res.on('data', function(data) { contents += data; });
  res.on('close', function() {
   //  do JSON.parse(contents)
  });
});