||
The logical OR operator evaluates all values from left to right and returns the first truthy value.
It's used to check if either value is true. It's like saying if condition1 is true and condition2 is true then do this.
if (condition1 || condition2) ) {
// executes this block of code if either condition1 or condition2 is true
}
console.log(0 || 3) // 3
// you can combine the logical-or operator with the logical-and operator
console.log(0 || 3 && 6) // 6
console.log(0 || false && 4) // false