JavaScript If statement condition with no operator? What does it do?

Question

I am used to if statements having a condition where ( x < y ) or ( x == y ). But in cases where there is no operator, what does the if statement check exactly? i.e. in th

Answer 1

As long as the expression inside the parentheses returns something other than false, null, 0, "" or undefined... the block in the if statement will be executed :-)

In fact all of the following will work: