Is there a community website similar to OpenProcessing.org, but for the HTML5 Canvas element (or one of the various Canvas libraries)? It should offer the possibility to view the code that others have posted, edit it online and view the results immediately. I know that it's possible on OpenProcessing to use ProcessingJS but it uses the Processing syntax and I'd like to practice JavaScript and learn from experimenting with examples.
I know about JSFiddle but it lacks the possibility of browsing through code snippets of other users (there are only a few examples) and it does not have the focus on drawing / visualizing with the Canvas element.
I've googled it without success. If this is not the right Stackexchange site to ask this question, please advise.