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Frankly, I don't notify users in any way of a dependency on cookies or JavaScript. If you go disabling features fundamental to the functionality of the web, I expect that you know what you're doing and don't, in fact, expect most of the web to work. The web apps I build simply aren't going to function if you disable JavaScript or cookies.



That is a terribly user-unfriendly design decision because it does not distinguish between failure modes. Maybe your site is broken because I am running noscript or maybe it broken because it is mis-configured or recently hacked or my ISP's proxy is black-holing things or a dozen other things that could go wrong.

The point is that it is relatively trivial for the developer to add automated checks for per-requisites and display warnings for the ones that are missing. It is a lot harder for each user to manually run down through the list of all the things that could go wrong.

If they are missing, tell me your site needs javascript or cookies to operate and I might enable them for your site and give it another shot. But if I just get a catastrophic failure without explanation then I'll probably hit "back" and pick another similar site out of the google search results that brought me there.

Just don't make the warnings into roadblocks. Inform the user and let them decide to proceed or not.

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[body] [noscript]This site requires cookies and javascript to function properly[/noscript] ... [/body]

Problem solved.

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Not for cookies it ain't.

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You do your test for cookies in JS, and display the message about cookies alone if that test fails.

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