Your approach is very clever! I think it would be even fancier as a script hosted on a CDN a la Firebug, e.g. https://debugjs.global?var=foobar https://debugjs.

Your approach is very clever! I think it would be even fancier as a script hosted on a CDN a la Firebug, e.g. https://debugjs.global?var=foobar https://debugjs.global?var=foobar A sort of “Drop this script tag into your app to track down that pesky variable.”