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Javascript operators examples

Learn how to use operators in javscript, Assignment operator, Comparison operator, Logical operator, Bitwise operator, Arithmetic operator in Javascript.

JavaScript Assignment Operators

Operator Description Example
= assigning the right side value to variable in left side a = b, means assigning the value of b to a
+= current value + new value var a = 10; a += 5;
that means a will become a+5= 15
-= current value - new value var a = 10; a -= 5;
that means a will become a-5= 5
*= current value * new value var a = 10; a *= 5;
that means a will become a*5= 50
/= current value / new value var a = 10; a /= 5;
that means a will become a/5= 2

JavaScript Comparison Operators

Operator Description Example
== equal to, check if both equal, Returns true or false a==b, means a equal to b
!= Not equal to, check if both not equal, Returns true or false a!=b, means a not equal to b
> greater than, Returns true or false a>b, means a greater than b
>= greater than equal to, Returns true or false a>=b, means a greater than equal to b
< less than, Returns true or false a<b, means a less than b
<= less than equal to, Returns true or false a<b, means a less than equal to b

JavaScript Logical Operators

Operator Description Example
|| OR (a === 10 || b === 5) is false
&& AND (a < 10 && b >5) is true
! NOT !(a == b) is true
JavaScript Bitwise Operators
Operator Description Example
~ NOT a = ~ 5
^ XOR a = 5 ^ 1
JavaScript Arithmetic Operators

Here we use two variable (a=10, b=5) to show you the examples below.

Operator Description Example
% Modulus (division remainder) a % b :
++ Increment a = b++ :
-- Decrement
+ Addition
- Subtraction
* Multiplication
/ Division


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Operators in JavaScript: Assignment, Comparison, Logical, Bitwise, Arithmetic