MDN URL

https://developer.mozilla.org/en-US/docs/Web/API/Web_Storage_API

What specific section or headline is this issue about?

https://developer.mozilla.org/en-US/docs/Web/API/Web_Storage_API#private_browsing_incognito_modes

What information was incorrect, unhelpful, or incomplete?

The following sentence is outdated:

Then there are some browsers, most notably Safari, that have opted for a solution where storage is available, but is empty and has a quota of 0 bytes assigned, effectively making it impossible to write data to it.

What did you expect to see?

I have just tested use of localStorage with Safari on iOS 11.0 and iOS 15.4 and both of them very much support reading and writing data to localStorage when using private tabs. The only difference with Chrome and Firefox is that localStorage is NOT shared between private tabs.

Historically it appears you couldn't write to localStorage but as of June/2022 this doesn't seem to be the case, even for old versions of Safari (such as the one on iOS 11.0 released 5 years ago) so I suggest that the docs should be updated to avoid giving the wrong impression (perhaps we should use the words "...most notably, old versions of Safari ..." to emphasize that users should test their code to confirm the issue rather simply assuming it still applies).

Do you have any supporting links, references, or citations?

You can spin up Safari on iOS 11 (using services like BrowserStack.com), open the DevTools, go to the console and type window.localStorage.setItem('foo', 'bar') and it won't fail (you can get the value back by window.localStorage.getItem('foo') and you'll see the expected value).

Do you have anything more you want to share?

No response

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