Do subdomains share local storage?

Question

I'm currently building two react apps with both storing a redux state in local storage.

Will the example domains below share the same local storage?

www.website.com
admin.website..com

Due to the nature of the apps, I do not want their local storage to be shared and hoping this is the default behaviour.

Google "subdomain localstorage", the first result answers your question. — robinsax, Dec 22 '18 at 04:19
React here, https://github.com/localForage/localForage/issues/548 — Just code, Dec 22 '18 at 04:22
https://html.spec.whatwg.org/multipage/webstorage.html#dom-localstorage — Bhojendra Rauniyar, Dec 22 '18 at 04:27

Matthew Herbst · Accepted Answer · 2021-10-07T19:33:35.560

8

localStorage is based on a Document's origin. For example, the origin of this page is:

self.origin; // "https://stackoverflow.com"

So, no, localStorage will not be shared across subdomains. If you did want to share localStorage across sub-domains, there is a solution here on SO for that :)

edited Oct 07 '21 at 19:33

answered Dec 22 '18 at 04:23

Matthew Herbst

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Looks like there are a few solutions if you need the cross domain support. I'll do some research on this when I need to that type of solution. Thanks for pointing me in the right direction. – Charklewis Dec 23 '18 at 22:31

Do subdomains share local storage?

1 Answers1