Logs all calls on a DOM window (or any other object) to the console by replacing the functions with a wrapper. NOTE: This does not deal with errors, it is just for debugging purposes.

logWindowCalls.js

var target = window;
for (var i in target) {
  if ("function" != typeof target[i]) continue;
  target[i] = (function(name, fn) {
    return function() {
      console.log("" + name + " called");
      return fn.apply(target, arguments);
    }
  })(i, target[i]);
}