Relying on short-circuit evaluation instead of using the IF control structure
This is an abuse of short-circuit evaluation.  It's not immediately obvious what the intent is.  Sure, i can eventually see that you're getting an ID, calling Req.abort(), whatever.  But i shouldn't have to decipher a line of code first to figure out what it does.
Conciseness never trumps readability in source code.  (Sure, minifying/packing JS has its benefits.  But you don't write packed/minified code; you start out with decent code and then run a tool on it.)

Since your intent is to do the one thing if the other stuff is true, the code should say that.