JavaScript Operators: The Basics

introduction

lets take an math example - 6 + 7 = 13 here 6 & 7 are operands and ' + ' is an operator , 13 is the result of the operation .

similarly - JavaScript operators are symbols or keywords used to perform operations on values and variables.

now lets talk about various kinds of operators :-

Arithmetic operators

Arithmetic operators are used to perform mathematical calculations.

Operator	Meaning	Example
+	Addition	1+2=3
-	subtraction	2-1=1
*	multiplication	1*2=2
/	division	4/2=2
%	Modulus	3%2=1

Comparison operators :

Comparison operators are used to compare two values. They always return true or false.

operator	means
==	Equal to
===	Strictly equals to
!=	not equals
>	grater than
<	less than

The diffrence bw "==" and "===" is that - first one is loose equality, it checks only value euality and second one is strict , its checks both value and type , like comparing a sweet and sour potato chip - "==" returns true as both are potato chip , but "===" returns false as one is sour and one is sweet , similarly

let a=5
let b="5"
// If we compare a==b , it will return true , if we do a===b , then it will return false

Logical operators

operator	means
&&	AND operator , returns true if and only if both conditions are true
!	Not operator , it reverse an bool value

Assignment operators

operator	meaning
=	assign a value , like a = 5 ,,, I am assigning 5 to a variable 'a'
+=	add and assign an value , like : a+=5 , means add 5 to the previous value of a and then reassign it to the new value its like - a = a+5
-=	similar like above but first subtracts and then assign it