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Az év hányadik hetében járunk kódja
<script Language="JavaScript">
// Week of the year script - By Ada Shimar (ada@chalktv.com)
// Based on code by Duncan Kabinu, Florida Department of Agriculture.
// Modified by Italian anonimous on 19.08.2002
// Visit JavaScript Kit (http://javascriptkit.com) for this script and 400+ more
function weekNo() {
var totalDays = 0;
now = new Date();
years=now.getYear();
var days = new Array(12); // Array to hold the total days in a month
days[0] = 31;
days[2] = 31;
days[3] = 30;
days[4] = 31;
days[5] = 30;
days[6] = 31;
days[7] = 31;
days[8] = 30;
days[9] = 31;
days[10] = 30;
days[11] = 31;
// Check to see if this is a leap year
if (Math.round(now.getYear()/4) == now.getYear()/4) {
days[1] = 29
}else{
days[1] = 28
}
// If this is January no need for any fancy calculation otherwise figure out the
// total number of days to date and then determine what week
if (now.getMonth() == 0) {
totalDays = totalDays + now.getDate();
}else{
var curMonth = now.getMonth();
for (var count = 1; count <= curMonth; count++) {
totalDays = totalDays + days[count - 1];
}
totalDays = totalDays + now.getDate();
}
// Here is the modification: considering when start the 1st week of year.
// Originally was only: var week = Math.round(totalDays/7)
// Check if browser is "Microsoft Internet Explorer" or not and apply the right var
var agt=navigator.userAgent.toLowerCase();
if ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1)) {
var firstday=new Date("01/01/"+String(now.getYear())).getDay();
}
else {
var firstday=new Date("01/01/"+String(1900+now.getYear())).getDay();
}
var diff=7-firstday+1;
var week = Math.round((totalDays+diff-firstday)/7); return week;
}
document.write("Üdvözöllek az év "+weekNo()+"<\/b> napján a "+years+"!-ból")
</SCRIPT>
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