what is res.on() in http request?

Thanks... I'll try and update the docs. Basically:

• function(res) is called when the connection is established
  
• on('data') is called when there's a chunk of data (this almost certainly will be more than once)
  
• on('close') is called when the connection closes.
  
  

The HTTP image loader example does this:

  require("http").get("http://www.espruino.com/images/espruino_84_48_1bpp.bmp", function(res) {
    var bmpString = "";
    res.on('data', function(data) { bmpString += data; });
    res.on('close', function() { 
      var img = require("BMPLoader").load(bmpString);
      // ...
    });
  });