Scope watcher counter

gistfile1.js

var getWatchers = function (element) {
    // convert to a jqLite/jQuery element
    // angular.element is idempotent
    var el = angular.element(
            // defaults to the body element
            element || document.getElementsByTagName('body')
        )
        // extract the DOM element data
      , elData = el.data()
        // initalize returned watchers array
      , watchers = [];

    // AngularJS lists watches in 3 categories
    // each contains an independent watch list
    angular.forEach([
            // general inherited scope
            elData.$scope,
            // isolate scope attached to templated directive
            elData.$isolateScope,
            // isolate scope attached to templateless directive
            elData.$isolateScopeNoTemplate
        ],
        function (scope) {
            // each element may not have a scope class attached
            if (scope) {
                // attach the watch list
                watchers = watchers.concat(scope.$$watchers || []);
            }
        }
    );

    // recurse through DOM tree
    angular.forEach(el.children(), function (childEl) {
        watchers = watchers.concat(getWatchers(childEl));
    });

    return watchers;
};