JavaScript Operators
What Are JavaScript Operators?
JavaScript operators are symbols used to perform operations on values and variables.
Example:
Types of JavaScript Operators
Arithmetic Operators
Used for mathematical calculations.
| Operator | Meaning | Example | Result |
|---|---|---|---|
+ | Addition | 10 + 5 | 15 |
- | Subtraction | 10 - 5 | 5 |
* | Multiplication | 10 * 5 | 50 |
/ | Division | 10 / 5 | 2 |
% | Modulus (remainder) | 10 % 3 | 1 |
** | Exponent | 2 ** 3 | 8 |
Assignment Operators
Used to assign or update values.
| Operator | Meaning | Example | Result |
|---|---|---|---|
= | Assign | x = 10 | 10 |
+= | Add and assign | x += 5 | x = x + 5 |
-= | Subtract and assign | x -= 5 | x = x - 5 |
*= | Multiply and assign | x *= 5 | x = x * 5 |
Comparison Operators
Used to compare two values (returns true or false).
| Operator | Meaning | Example | Result |
|---|---|---|---|
== | Equal to | 10 == "10" | true |
=== | Strict equal | 10 === "10" | false |
!= | Not equal | 10 != 5 | true |
> | Greater than | 10 > 5 | true |
< | Less than | 5 < 10 | true |
>= | Greater or equal | 10 >= 10 | true |
<= | Less or equal | 5 <= 10 | true |
Logical Operators
Used to combine conditions.
| Operator | Meaning | Example | Result |
|---|---|---|---|
&& | AND | true && false | false |
| ` | ` | OR | |
! | NOT | !true | false |
String Operators
Only + and += work for strings.
Increment and Decrement Operators
| Operator | Meaning | Example |
|---|---|---|
++ | Increase by 1 | x++ |
-- | Decrease by 1 | x-- |
Example with Output
Output:
Summary
Js operators help perform:
Assign values
Compare values
Combine conditions
Manipulate strings
