Where is rootScope values are stored? In cookie or local storage?

Question

Where is rootScope values are stored? In cookie or local storage?

I have a small doubt about rootScope in angularjs.

I have passing a value between two controllers, So I have using the $rootScope.

• I want to know how to rootScope Working? and where is the rootScope data stored?

• In Local Storage or cookie or anything else?

Answer 1

When switching controllers (or routes or states) in AngularJS only what's inside the controller closure is destroyed, anything outside of it is not. $rootScope is a service instantiated only once on the page so when you switch controllers it is not destroyed. That's why it's persistent. If you reload the whole page (hit [F5] in your browser) then everything in it is lost.

This is something fundamental for the whole Single Page Application pattern.

If you look into the sources for this service you won't find anything related to cross-page persistence.