Scripter Javascript Tutorial

30 || logical or

MDN: Operators: Logical OR

The || (double pipe) comparison will be true when any of the comparisons are true. Another way to read the || comparison is that it will find the first true result and return true.

60 == 60 || 72 == 72 // true || true = true
60 == 60 || 60 == 72 // true || false = true
60 == 72 || 60 == 60 // false || true = true
60 == 72 || 60 == 59 // false || false = false