gistfile1.js

(function() {
  Thing = {};

  Thing.findAll = function(callback) {
    $.getJSON('/things', function(data) {
      if (data!=null) {
        callback(data);
      }
    });
  }
  window.Thing = Thing;
})();


function doSomethingWithThings(things) {
}

Thing.findAll(doSomethingWithThings);

@jeffrydegrande any reason to encapsulate the Thing into an anonymous function?

Also, you haven't used var on line 2, so, line 11 is unnecessary :P

I put it in an anonymous function because I have plenty versions of this in which I added functionality afterwards which I did not wanted to be available globally. One version of this for example keeps requests arounds in a hash which I just keep private in that scope without having to come up with safe names to avoid collisions

The var really is missing ... hacked this up in 20 seconds ;)