Canvas fallback

[yonatoshi]

If someone doesn't have canvas enabled there is JavaScript errors which can cause other working scripts not to work. With the rise of canvas blocking it would be nice if chart Js had some fallback or even a way to alert the user canvas is disabled. The reason canvas blocking is increasing is because it can be fingerprinted by browsers and is a privacy issue for some users. Thanks for the great library and hope you can consider.

[etimberg]

I agree that we should gracefully handle this condition. I am happy to merge a PR that prevents a crash when the canvas does not exist.

[simonbrunel]

@yonatoshi old post, but can you give more details about the JS errors and the way to disable canvas? what kind of fallback / alert are you thinking of?

[etimberg]

Fixed in #3474