[Javascript] Is integer?

[allard-schripsema at procergs.rs.gov.br (Allard Schripsema)]

Hi
the right word in English is leapyear.
You can use the modulus operator (it shows what's left after you divide the
two values):

function isLeapYear(year) {
	if ((year % 4) == 0) {
		return true;
	} else{
		return false;
	}
}

Another thing: the rules of a leapyear are a bit more complex than the
simple dividable by 4 as far as i know....

Hope this helps,

allard Schripsema
www.VisualDigital.com.br

-----Original Message-----
From: javascript-bounces@xxxxxxxxxx
[mailto:javascript-bounces@xxxxxxxxxx]On Behalf Of Peter Lauri
Sent: Monday, May 29, 2006 5:28 AM
To: javascript@xxxxxxxxxx
Subject: [Javascript] Is integer?


Best group member,

Is there any function that checks if something is an integer? I did not find
one and created this temporary function:

function isInteger(thenumber) {
	thenumberceil = Math.ceil(thenumber);
	if(thenumberceil>thenumber) return false;
	else return true;
}

Why I actually need this is because I need to find out if a year is a "skott
year" (do not know the English word, but the years when February has 29 days
instead of 28). Is there any function for that? I created this temporary
function:

function isSkottYear(y) {
	yeardiv = y/4;
	if(isInteger(yeardiv)) return true;
	else return false;
}

There is probably better ways of doing this, are they?

Best regards,
Peter Lauri

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