AngularJS Essentials

Chapter 4
There are three events that can be broadcasted by the $route service and are very
useful in many situations. The broadcasting mechanism will be studied in the next
chapter, Chapter 5, Scope.
The first event is the $routeChangeStart event. It will be sent when the routing
process starts and can be used to create a loading flag, as follows:
run.js
parking.run(function ($rootScope) {
$rootScope.$on("$routeChangeStart", function(event, current,
previous, rejection)) {
$rootScope.loading = true;
});
});
After this, if all the promises are resolved, the $routeChangeSuccess event is
broadcasted, indicating that the routing process finished successfully:
run.js
parking.run(function ($rootScope) {
$rootScope.$on("$routeChangeSuccess", function(event, current,
previous, rejection)) {
$rootScope.loading = false;
});
});
If any of the promises are rejected, the $routeChangeError event is broadcasted,
as follows:
run.js
parking.run(function ($rootScope, $window) {
$rootScope.$on("$routeChangeError", function(event, current,
previous, rejection) {
$window.location.href = "error.html";
});
});
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