The use of the triple exclamation mark

Question

Looking through the source code of one of our projects, I\'ve found some amount of places where we\'re using three exclamation marks in conditional statements, like so:

Answer 1

There is no difference between !a and !!!a, since !!!a is just !!(!a) and because !a is a boolean, !!(!a) is just its double negation, therefore the same.