angularjs - localStorage vs sessionStorage vs cookies

Question

I am working in an app where I need to keep some data during the user is logged in and I have that question, what is the difference among localStorage, sessionStorage, cookies ???

I was asking what can I use in order to persist some data in the DOM, even if the user refresh the page, some people says: use sessionStorage, or localStorage, then, someone came up with the idea of use ngCookies because it works in every browser, but, which should I use ?

Answer 1

localStorage and sessionStorage are both so-called WebStorages and features of HTML5.

localStorage stores information as long as the user does not delete them.

sessionStorage stores information as long as the session goes. Usually until the user closes the tab/browser.

cookies are simply cookies, which are supported by older browsers and usually are a fallback for frameworks that use the above mentioned WebStorages.

In contrast cookies can store way less information then WebStorages and the information in WebStorages is never transferred to the server.

Keep in mind that the EU has a regulation that requires websites to inform their users about the usage of cookies. I dont know whether this also applies to WebStorages