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Check if Number is Even/Odd

function isEven(value) {
	if (value%2 == 0)
		return true;
	else
		return false;
}

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Red
11/26/2009
Why not just
function isEven(value) {
return (value%2 == 0);
}
Reply ↓
Robin
11/26/2009
And the PHP version only needs an extra dollar sign:
function isEven($int){
return ($int%2 == 0);
}
In these times, I can assume most webdevvers use a javascript library like jQuery or similar. These libraries have functions like isEven built in.
For those who don’t use such libraries: great snippet ;)
Reply ↓
Gautham
07/15/2011
I came across http://rindovincent.blogspot.com/p/javascript.html where there was a simple Javascript program to find whether the number is odd or even. I am pasting the same code with permission here.
var n = prompt(“Enter a number to find odd or even”, “Type your number here”);
n = parseInt(n);
if (isNaN(n))
{
alert(“Please Enter a Number”);
}
else if (n == 0)
{
alert(“The number is zero”);
}
else if (n%2)
{
alert(“The number is odd”);
}
else
{
alert(“The number is even”);
}
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