Operator Description Example
&& Logical AND: true if both the operands are true, else returns false x && y
|| Logical OR: true if either of the operands is true; returns false if both are false x || y
! Logical NOT: true if the operand is false and vice-versa. !xif(a <= 5){
yourFunction();
}n1 = !true // !t returns false (the opposite of true)
n2 = !false // !f returns true (the opposite of false)
n3 = !'' // !f returns true (in JavaScript, an empty string is falsey, thus the opposite of a falsey value here is truthy.)
n4 = !'Cat' // !t returns false (non empty string is truthy, thus opposite is falsy)// logical AND
console.log(true && true); // true
console.log(true && false); // false
// logical OR
console.log(true || false); // true
// logical NOT
console.log(!true); // false