Zeros in JavaScript

I wish I went through a page like this when I started JS. It might be useful to try to make some of the more illogical ones in bold, like NaN==NaN=false or [0]==0=true but [0]==[0]==false.<p>Also at least first and second table seem to be symmetric. To help visual parsing half of them could be hidden.

Nice writedown, albeit quite difficult to parse visually. Some mouse-dependent row / column highlighting would be quite beneficial in this case.