jsFiddle is a free code-sharing tool that allows you to edit, share, execute and debug Web code within a browser. Have you ever wanted to test out a new idea with some JavaScript and CSS quickly to ...

And, current jsfiddle runs JavaScript in a cross-origin iframe. I'm not sure if this issue is minor or worth fixing in the current jsfiddle, but what I can say here is a fix is very easy. Just adding ...