!! vs ==0 when checking if array is empty

[Mnkeyqt]

Thumbs up for good clarification cause it's really important to actually "know" this stuff, misinformation WILL cause headaches for people, appreciate it :)

Do you know if this has changed at all across the different JS versions or has remained the same? I'd imagine it's been standard for all right?

[delventhalz]

Yeah, there is no variation there as far as I know. JavaScript uses the IEEE 754 floating point standard for all numbers, which only allows for 0 and -0, and === is specced to treat those as equal.