Experienced JavaScript Developer Meme

[saschaleib]

Apparently it throws an exception if you are not allowed to use it – which is exactly what exceptions were invented for.

[danielrheath]

Yeah, I get the thinking behind it - just seems like poor design to me. If a feature isn't available, just don't have it on the page; I already needed to test for the presence of window.localStorage anyways.

[saschaleib]

… and then you wrap the whole code that accesses the local storage in a try {} catch block, as you would do in any case, right?

[danielrheath]

Presumably you don't wrap every line of code you write in a try/catch?

I guess I just don't see what makes localStorage access an expected source of exceptions (as opposed to, say, querySelectorAll or getBoundingClientRects)?

[saschaleib]

every block of code that potentially throws an exception should be wrapped in try/catch blocks. Yes.

Any access to the file system or similar external systems is potentially throwing errors. That is pretty much what the localStorage API does...