MooTools Class Sniffer Bookmarklet

I was recently reviewing a few MooTools-driven websites and one of the questions I wrote down was "Which MooTools Core classes do you use and how many classes have you created?" Then I asked myself if there was a way I could figure that out myself. The end result is a JavaScript bookmarklet that finds all of the MooTools classes defined within the Window object.

The MooTools JavaScript

(function() { 
if(window.MooTools == undefined) return false;
var classes = [];
for(obj in window) {
	try {
		var typo = (window.$type != undefined ? $type(window[obj]) : typeOf(window[obj]));
		if(typo == 'class') {
			classes.push(obj);
		}
	} catch(e) { }
}
classes.sort();
console.log('# Classes: ' + classes.length);
classes.each(function(klass) {
	console.log(klass);
}); })();

The key to finding each class is using the $type (< MooTools 1.3) or typeOf (MooTools 1.3) functions. If the result is "class", we've found a class in the given scope. The scope we're searching for is window scope. You can easily change the code snippet to change scope. Checking every scope would be far too taxing so I've stuck to window-level objects.

There you have it. MooTools 1.3 is structured a bit differently than 1.2 so you'll see far fewer classes with 1.3. Just a part of minimizing globals and tightening up this masterful framework!