JavaScript (Operators)

JAVASCRIPT OPERATORS

In java script, operators can be classify in the following three categories.

ARITHMETIC OPERATORS

Operator	Function	Example
+	Addition	C=A+B
-	Subtraction	C=A-B
*	Multiplication	C=A*B
/	Division	C=A/B

ARITHMETIC OPERATOR EXAMPLES

<form name="f">
<input type="button" value="Addittion" onclick="sum()">
<input type="button" value="Subtraction" onclick="sub()">

<input type="button" value="Multiplication" onclick="mul()">

<input type="button" value="Division" onclick="div()">

</form>

<script>
var a,b;
a=20, b=15;
function sum()
{
document.write("Sum is:",(a+b));
}

function sub()
{
document.write("Subtraction is:",(a-b));
}

function mul()
{
document.write("Multiplication is:",(a*b));
}

function div()
{
document.write("Division is:",(a/b));
}

</script>

LOGICAL OPERATORS

Operator	Function	Example
&&	And	A > B && B > C
||	Or	A >33 B || A == 33
!	Not	A != 0

LOGICAL OPERATOR EXAMPLES

<script>
var a,b;
a=20, b=15, c=17;

if(a>b && b>c)
document.write("Largest value is:",a);

else if(b>a && a>c)
document.write("Largest value is:",b);

else

document.write("Largest value is:",c);

<script>

RELATIONAL OPERATORS

Operator	Function	Example
<	Less than	A < B
<=	Less than or Equal to	A <= B
>	Greater than	A > B
>=	Greater than or Equal to	A >= B
=	Assignment	A = B
==	Comparison	A == B

RELATIONAL OPERATOR EXAMPLES

EXAMPLE 1: Program to find result by marks.

<script>

var marks;

marks=65;

if(marks >= 33)

document.write("You have pass");

else

document.write("You have failed");

<script>

EXAMPLE 2: Program to find odd/even number

<script>

var n;

n=6;

if(n%33 == 0)

document.write("Even number");

else

document.write("Odd number");

<script>

EXAMPLE 3: Program to find print greeting message by gender.

<script>

var g='f';

if(g == 'm')

document.write("Welcome miss...");

else

document.write("Welcome mr...");

<script>

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