javascript - QuotaExceededError: Dom exception 22: An attempt was made to add something to storage that exceeded the quota

Question

Using LocalStorage on iPhone with iOS 7 throws this error. I've been looking around for a resolvant, but considering I'm not even browsing in private, nothing is relevant.

I don't understand why localStorage would be disabled by default in iOS 7, but it seems it is? I've tested on other websites as well, but with no luck. I even tried testing it using this website: http://arty.name/localstorage.html, but it doesn't seem like it's saving anything at all for some weird reason.

Has anyone had the same problem, only they've had luck fixing it? Should I switch my storage method?

I tried hard-debugging it by only storing a few lines of information, but to no avail. I used the standard localStorage.setItem() function to save.

Answer 1

This can occur when Safari is in private mode browsing. While in private browsing, local storage is not available at all.

One solution is to warn the user that the app needs non-private mode to work.

UPDATE: This has been fixed in Safari 11, so the behaviour is now aligned with other browsers.