At 09:08 1/5/2000 PST, Karen Ahrens wrote:
>My JS isn't up to speed yet but boss has insisted on
>having a date script on our homepage. Now, the date
>displays correctly in IE but is at year 100 in Netscape
>and I don't have the skills (yet) to tell what to tweak.
>
>Could someone give our homepage a gander and let me know
>how to fix the problem or perhaps, point me to a better
>script to use? Thank you very much in advance!
>Homepage URL: http://magellan.edu
>
>Karen Ahrens
After some discussion on the wdg list we agreed to
not so simple solution but which works even in Opera :)
Body part is for ilustrating how to use the script.
Below there are two screeshots and some comments.
<head>
<script language='javascript' type="text/javascript"><!--
function getfullyearfix() {
// use standard y2k fix technique here
var tmp = this.getYear();
tmp = tmp % 100;
if (tmp > 50) return tmp+1900;
return tmp+2000;
}
// if (!Date.getFullYear) {
// line above changed to
if (Date.getFullYear != '') {
Date.prototype.getFullYear=getfullyearfix;
}
// --></script>
</head>
<body>
<script><!--
var today = new Date();
var birth = new Date(2037,1,27,12,12,12);
var birt2 = new Date(2038,1,27,12,12,12);
document.write( "<pre>");
document.write( "today= Date() = " + today +'<br>' );
document.write( "today.getYear() = " + today.getYear() +'<br>' );
document.write( "today.getFullYear()= " + today.getFullYear() +'<br>');
document.write( "<br>");
document.write( "My birthday in the year 2037 <br>" );
document.write( "birth= Date(....) = " + birth +'<br>' );
document.write( "birth.getYear() = " + birth.getYear() +'<br>' );
document.write( "birth.getFullYear()= " + birth.getFullYear() +'<br>');
document.write( "<br>");
document.write( "My birthday in the year 2038 - 32 bit clock stops!<br>" );
document.write( "birt2= Date(....) = " + birt2 +'<br>' );
document.write( "birt2.getYear() = " + birt2.getYear() +'<br>' );
document.write( "birt2.getFullYear()= " + birt2.getFullYear() +'<br>');
document.write( "<br>All is OK <br>");
// --></script>
</body>
=========== below is the screen shot of Opera output ===========
today= Date() = Wed Jan 5 17:23:13 GMT-0100 (MET) 2000
today.getYear() = 100
today.getFullYear()= 2000
My birthday in the year 2037
birth= Date(....) = Fri Feb 27 12:12:12 GMT-0100 (MET) 2037
birth.getYear() = 137
birth.getFullYear()= 2037
My birthday in the year 2038 - 32bit clock stops!
birt2= Date(....) = -1000
birt2.getYear() = null
birt2.getFullYear()= 2000
All is OK
================================================================
And of course E-minor' comment on 32 bit clock is valid.
Opera is using standard C time library. The library uses
32 bit clock starting from 1970. After year 2037 clock will
overflow and many C programs will calculate wrong time.
Mind that C is the most common language for writing
computer programs.
So the next Y2K bug will be actually Y2038 Bug
But for IE 4.0 clock works for the year 2038 and later.
=========== below is the screenshot of IE 4.0 output ===========
today= Date() = Wed Jan 5 02:19:36 UTC+0100 2000
today.getYear() = 2000
today.getFullYear()= 2000
My birthday in the year 2037
birth= Date(....) = Fri Feb 27 12:12:12 UTC+0100 2037
birth.getYear() = 2037
birth.getFullYear()= 2037
My birthday in the year 2038 - 32 bit clock stops!
birt2= Date(....) = Sat Feb 27 12:12:12 UTC+0100 2038
birt2.getYear() = 2038
birt2.getFullYear()= 2038
All is OK
================================================================
--
Romek Zylla ~~~~~
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