JavaScript Comparison and Logical Operators

JavaScript comparison and logical operator testing the conditional statement that either return true or false.

Comparison Operators

Operator	Description
==	Equal To
===	Equal Both Value and Type
!=	Not Equal To
!==	Not Equal To Either Type or Value
>	Greater Than
<	Less Than
>=	Greater Than or Equal To
<=	Less Than or Equal To

It doesn’t matter the value type, if both value are same, it will return true. Otherwise, it will return false.

5 == 5 // true
5 == "5" // true
5 == "a" // false
5 == 10 // false

Strict equal will return true is both type and value are same. If the type or value not the same, it will return false.

5 === 5 // true
5 === "5" // false
5 === "a" // false
5 === 10 // false

If the

5 != 5 // false
5 != "5" // false
5 != "a" // true
5 != 10 // true

5 !== 5 // false
5 !== "5" // true
5 !== "a" // true
5 !== 10 // true

If the value is greater than the left operand, it will return true. Otherwise, it will return false.

5 > 3 // true
5 > 5 // false
5 > 10 // false

If the value is less than the left operand, it will return true. Otherwise, it will return false.

5 < 3 // false
5 < 5 // false
5 < 10 // true

5 >= 3 // true
5 >= 5 // false
5 >= 10 // true

5 <= 3 // true
5 <= 5 // false
5 <= 10 // true

Operator	Description
&&	Logical AND: `true` if both operand are true, else evaluates as `false`
\|\|	Logical OR: `true` if either one operand are true. `false` if both operand are false
!	Logical NOT: `true` if the operand is `!false` and vice-versa.

true if both operand are true, else evaluates as false

true && true; // true
true && false; // false
false && true; // false
false && false; //false

true if either one operand are true. false if both operand are false

true || true; // true
true || false; // true
false || true; // true
false || false; //false

true if the operand is !false and vice-versa.

!true; // false
!false; // true