Mozilla not rendering web pages?

[Quartz]

> For the past week or so I have seen an increasing number of web pages where
> the javascript seems to not run. I get mostly text that is in linear lists
> along with a few "standard" icons like empty menus.

It sounds like you're describing a CSS problem rather than a Javascript 
problem. That espn site loads its CSS off of another server 
(espncdn.com), did you perhaps recently install some kind of adblocker 
or something that might be messing with that sort of stuff?