Do comments affect performance?

Question

Am I correct to say that JavaScript code isn\'t compiled, not even JIT? If so, does that mean that comments have an affect on performance, and I should be very careful where I p

Answer 1

The biggest effect that comments have is to bloat the file size and thereby slow down the download of the script. Hence why all professional sites use a minimizer for a productive version to cut the js down to as small as it gets.