JavaScript Comparison operators are used to compare two values and give back a boolean value either true or false. used in logical statements (if else) to determine equality or difference between variables or values.
operand1 operator operand2| Operator | Description | Example |
|---|---|---|
== | Equal to | 5==5; //true |
!= | Not equal to | 5!=5; //false |
=== | Strict equal to | 5==='5'; //false |
!== | Strict not equal to | 5!=='5'; //true |
> | Greater than | 3>2; //true |
>= | Greater than or equal to | 3>=3; //true |
< | Less than | 3<2; //false |
<= | Less than or equal to | 2<=2; //true |
These comparison operators can be used to compare various types of values, such as numbers, strings, and objects, and they return a boolean value (true or false) based on the result of the comparison.
JavaScript comparison operators
Simple example code equal to the operator and Not Equal to the Operator.
<!DOCTYPE html>
<html>
<body>
<script>
const a = 5, b = 2, c = 'hello';
// equal to operator
console.log(a == 5); // true
console.log(b == '2'); // true
console.log(c == 'Hello'); // false
// not equal operator
console.log(a != 2); // true
console.log(b != 'Hello'); // true
</script>
</body>
</html>
Output:
Greater than Operator and Less than Operator
const a = 3;
// greater than operator
console.log(a > 2); // true
// less than operator
console.log(a < 2); // false
Logical Operators
Logical operators are used to determine the logic between variables or values.
If x = 6 and y = 3
| Operator | Description | Example |
|---|---|---|
&& | Logical AND: true if both the operands/boolean values are true, else evaluates to false | (x < 10 && y > 1) is true |
|| | Logical OR: true if either of the operands/boolean values is true. evaluates to false if both are false | (x == 5 || y == 5) is false |
! | Logical NOT: true if the operand is false and vice-versa. | !(x == y) is true |
Do comment if you have any doubts or suggestions on this JS operator topic.
Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.
OS: Windows 10
Code: HTML 5 Version