Javascript UTC date/time bug in Safari?
I have found what I believe is a UTC date/time bug in javascript/Safari. If I get the UTC version of the current date and then 'get' and 'set' the minutes field, the hour advances by one. This happens with Safari but not other browsers on OSX. As a test, I wrote the following html stub to check it out. It may be something to do with the recent change to GMT from UK summer time, but I suspect not....
&<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>
<script language="JavaScript" type="text/javascript">
function datebug() {
var d = new Date(); // current date&time
alert('Local current date/time:\n' + d);
var minutes = d.getMinutes();
d.setMinutes(minutes);
alert('Local current date:\n' + d + ' with minutes got and set');
}
function UTCdatebug() {
var d = new Date(); // current date&time
alert('UTC current date/time:\n' + d);
var minutes = d.getUTCMinutes();
d.setUTCMinutes(minutes);
alert('UTC current date/time:\n' + d + ' with minutes got and set');
}
</script>
</head>
<body>
<input name="test" type="button" value="date!" onClick="datebug();"/>
<input name="test" type="button" value="UTC date bug!" onClick="UTCdatebug();"/>
</body>
</html>
&<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>
<script language="JavaScript" type="text/javascript">
function datebug() {
var d = new Date(); // current date&time
alert('Local current date/time:\n' + d);
var minutes = d.getMinutes();
d.setMinutes(minutes);
alert('Local current date:\n' + d + ' with minutes got and set');
}
function UTCdatebug() {
var d = new Date(); // current date&time
alert('UTC current date/time:\n' + d);
var minutes = d.getUTCMinutes();
d.setUTCMinutes(minutes);
alert('UTC current date/time:\n' + d + ' with minutes got and set');
}
</script>
</head>
<body>
Safari UTC date bug
<input name="test" type="button" value="date!" onClick="datebug();"/>
<input name="test" type="button" value="UTC date bug!" onClick="UTCdatebug();"/>
</body>
</html>
