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Utility to count watchers in an AngularJS app. The higher the number of watchers, the slower your app will run.
/**
* Utility to count watchers in an AngularJS app.
*/
function countWatchers() {
var root = angular.element(document.getElementsByTagName('body'));
var watchers = [];
var f = function (element) {
if (element.data().hasOwnProperty('$scope')) {
angular.forEach(element.data().$scope.$$watchers, function(watcher) {
watchers.push(watcher);
});
}
angular.forEach(element.children(), function(childElement) {
f(angular.element(childElement));
});
};
f(root);
console.log('watchers.length: ', watchers.length);
}
(function() {
countWatchersTimeout = window.setTimeout(countWatchers, 10000);
})();
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