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Interesting Way to Print Complete JavaScript Object Heirarchy

SquirrelFish.jpg

I was working with the JSON response from my servlet and needed to be able to print the complete structure of a JavaScript object. I wanted to make sure that I was evaluating what I was receiving from the servlet properly. Well... there isn't something that's a part of JavaScript natively, but you can do something simple and you'll get something pretty close:

  var data = eval('(' + xhr.responseText + ')');
  var guts = '';
  for (var key in data) {
    guts += key + ' : ' + data[key] + '\n';
  }

and you get the keys and values for those keys. You aren't not going to get a complete recursive output, but if you wanted to, it's easy to imagine making a print function and you're good to go.

Just a neat little trick.

This entry was posted on Thursday, April 23rd, 2009 at 1:06 pm and is filed under Coding, Open Source Software. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.