Operators In Javascript

• JAVASCRIPT OPERATOR:

ARITHMATIC OPERATOR
ASSIGNMENT OPERATOR
COMPARISION OPERTOR
LOGICAL OPERATOR
CONDITIONAL OPERATOR

ARITHMATIC OPERATOR:

• Arithmetic operators are used to perform arithmetic between variables

and/or values.

• Given that y=5, the table below explains the arithmetic operators:

Operator	Description	Example	Result
+	Addition	x=y+2	x=7
-	Subtraction	x=y-2	x=3
*	Multiplication	x=y*2	x=10
/	Division	x=y/2	x=2.5
%	Modulus (division remainder)	x=y%2	x=1
++	Increment	x=++y	x=6
--	Decrement	x=--y	x=4

 

 

 

 

ASSIGNMENT OPERATOR:

• Assignment operators are used to assign values to JavaScript variables.
• Given that x=10 and y=5, the table below explains the assignment operators:

Operator	Example	Same As	Result
=	x=y		x=5
+=	x+=y	x=x+y	x=15
-=	x-=y	x=x-y	x=5
*=	x*=y	x=x*y	x=50
/=	x/=y	x=x/y	x=2
%=	x%=y	x=x%y	x=0

 

 

 

 

 

COMPARISION OPERATOR:

• Comparison operators are used in logical statements to determine equality or difference between variables or values.
• Given that x=5, the table below explains the comparison operators:

Operator	Description	Example
==	is equal to	x==8 is false
===	is exactly equal to (value and  type)	x===5 is true x==="5" is false
!=	is not equal	x!=8 is true
>	is greater than	x>8 is false
<	is less than	x<8 is true
>=	is greater than or equal to	x>=8 is false
<=	is less than or equal to	x<=8 is true

How Can it be Used

• Comparison operators can be used in conditional statements to compare values and take action depending on the result:

 For Example:

    If (age<18) 

               document.write("Too young");

 LOGICAL OPERATOR:

• Logical operators are used to determine the logic between variables or values.
• Given that x=6 and y=3, the table below explains the logical operators:

Operator	Description	Example
&&	and	(x < 10 && y > 1) is true
||	or	(x==5 || y==5) is false
!	not	!(x==y) is true

 

 

 CONDITIONAL OPERATORS:

• JavaScript also contains a conditional operator that assigns a value to a variable based on some condition.

Syntax:
<Variable name> = <condition>? value1: value2

    Example:
x = (y == 5)? “x is true”:”x is false”
- Here if value of y is 5 then value of x = “x is true”
- If value of y is not 5 then value of = “x is false”