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Count the number of watchers in AngularJS 1 include in bookmarklet
javascript:(function() {
if (!angular) {
alert('Not a angular application or window.angular not found');
return;
}
var entryNode = document.querySelector('[ng-app]') || document.querySelector('.ng-scope');
if (!entryNode) {
alert('No entryPoint found');
return;
}
angular.element(entryNode)
.injector()
.invoke(function($rootScope) {
var a = performance.now();
$rootScope.$apply();
alert('A digest cycle took ' + (performance.now()-a).toString() + ' ms ');
})
})();
javascript:(function () {
if (!angular) {
alert('Not a angular application or window.angular not found');
return;
}
var root = angular.element(document.getElementsByTagName('body'));
var watchers = [];
var f = function (element) {
angular.forEach(['$scope', '$isolateScope'], function (scopeProperty) {
if (element.data() && element.data().hasOwnProperty(scopeProperty)) {
angular.forEach(element.data()[scopeProperty].$$watchers, function (watcher) {
watchers.push(watcher);
});
}
});
angular.forEach(element.children(), function (childElement) {
f(angular.element(childElement));
});
};
f(root);
var watchersWithoutDuplicates = [];
angular.forEach(watchers, function(item) {
if(watchersWithoutDuplicates.indexOf(item) < 0) {
watchersWithoutDuplicates.push(item);
}
});
alert('There is ' + watchersWithoutDuplicates.length + ' watcher(s) in the page');
})();
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