In Chrome you can inspect your closure (as you clarified in https://news.ycombinator.com/item?id=38226743#38231705 https://news.ycombinator.com/item?id=38226743

In Chrome you can inspect your closure (as you clarified in https://news.ycombinator.com/item?id=38226743#38231705 https://news.ycombinator.com/item?id=38226743#38231705) using the "Watch" pane, and then look at its "[[Scopes]]" pseudo-property. I don't think there is a way in Firefox.