even or odd number

[cmoore67]

How do I find out if a number is even or odd?

for example:

$var = 7

if ( $var is an odd number ){
perform this function
} elseif ($var is an even number) {
perform this function
}

thanks,
Chris

[Anon]

Use the mod operator:

if ($var % 2 == 1 ) {
should be odd
} else {
even
}

[cmoore67]

thanks

[cmoore67]

This worked, but does the "mod operator" do exactly?

thanks
Chris

[Anon]

dear sir,
i m aman and i do java script but i have content some problems so plz help me, i want script of even and odd number and also prime number with the help of Array.
thanks,

[Anon]

the mod operator returns the remainder in a division operation

for instance: 9 / 2 = 4.5
OR: 9 / 2 = 4 with a remainder of 1.

if you use the %, it will return whatever the remainder is.