I'm getting QuotaExceededError (DOM Exception 22): The quota has been exceeded.
on Safari when I'm in incognito mode.
I went through similar questions like this: QuotaExceededError: Dom exception 22: An attempt was made to add something to storage that exceeded the quota
But they talk about setItem, I get this error somewhere else.
I get this error on this line: localStorage['gallery.extensions'] = JSON.stringify({});
or localStorage['asdf'] = 'asdfg';
I tried combining this answer and replacing every line like localStorage['asdf'] = 'asdfg';
to be localStorage.setItem('asdf', 'asdfg')
and every access like localStorage['asdf']
to be localStorage.getItem('asdf')
but that didn't help either.
You can't use local storage in incognito mode. By wrapping your setItem or getItem calls in a try/catch just helps your code handle the failed usage of local storage, and then alert the user that they need to use your application in a non-private mode.
The error you're getting is by design.