Is It Possible to Schedule Things?

The browser gives us nice, sort of low level access to certain things. So for example, if we're writing some code, we have the ability to optimize a loop or a function. But there are certain things like, go and load an image, right? And i'm not actually sure how that h t t p request is doing,. If it's on a good connection or not. Are there any ways in which you can take different code paths depending on these different constraints that you're talking about, riht cpu and network constraints?, he asks.