JavaScript Operators

What are Arithmetic Operators?

Arithmetic operators are used to perform mathematical calculations like addition, subtraction, and multiplication. They are the most basic building blocks of programming logic.

Operator	Operation	Description
+	Addition	Adds two values together
-	Subtraction	Subtracts the right value from the left value
*	Multiplication	Multiplies two values
/	Division	Divides the left value by the right value
%	Modulus	Returns the remainder after division

Note: While the basic behavior is the same across languages, how they handle things like "Integer Division" (e.g., 5 / 2) can vary.

Assignment Operators

Assignment operators assign values to JavaScript variables.

Operator	Example	Same As
=	x = 10	x = 10
+=	x += 5	x = x + 5
-=	x -= 5	x = x - 5
*=	x *= 5	x = x * 5
**=	x **= 5	x = x ** 5

String Concatenation

The + operator can also be used to add (concatenate) strings.

let text1 = "Vishnu";
let text2 = "Digital";
let text3 = text1 + " " + text2; // "Vishnu Digital"

Comparison Operators (Important!)

In JavaScript, there is a big difference between == and ===.

1. Loose Equality (==): Compares values after converting them to a common type (Type Coercion). 5 == "5" returns true.
2. Strict Equality (===): Compares both value and type. 5 === "5" returns false (because Number is not String).

Always use Strict Equality

To avoid bugs caused by JavaScript's automatic type conversion, professional developers always use === and !== instead of == and !=.

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