Object.watch() for all browsers?

Please note that `Object.Watch` and `Object.Observe` are both deprecated now (as of Jun 2018). I was looking for an easy way to monitor an object or variable for changes, and I found `Object.watch()`, that's supported in Mozilla browsers, but not IE. So I started searching around to see if anyone had written some sort of equivalent. About the only thing I've found has been a jQuery plugin, but I'm not sure if that's the best way to go. I certainly use jQuery in most of my projects, so I'm not worried about the jQuery aspect... Anyway, the question: Can someone show me a working example of that jQuery plugin? I'm having problems making it work... Or, does anyone know of any better alternatives that would work cross browser? Update after answers: Thanks everyone for the responses! I tried out the code posted here: http://webreflection.blogspot.com/2009/01/internet-explorer-object-watch.html But I couldn't seem to make it work with IE. The code below works fine in Firefox, but does nothing in IE. In Firefox, each time `watcher.status` is changed, the `document.write()` in `watcher.watch()` is called and you can see the output on the page. In IE, that doesn't happen, but I can see that `watcher.status` is updating the value, because the last `document.write()` call shows the correct value (in both IE and FF). But, if the callback function isn't called, then that's kind of pointless... :) Am I missing something? ``` var options = {'status': 'no status'}, watcher = createWatcher(options); watcher.watch("status", function(prop, oldValue, newValue) { document.write("old: " + oldValue + ", new: " + newValue + "<br>"); return newValue; }); watcher.status = 'asdf'; watcher.status = '1234'; document.write(watcher.status + "<br>"); ```