Hi mr Michaels.
Only for fun i wrote this code. I tried it under Mozilla Firefox,
Opera 9.0 and
Internet Explorer 6.0. If there is a doctype in the document the
function detectDoctype() will return
object with 3 properties - xhtml - XHTML ot HTML , version - numer of
version and importance - stict, transitional etc. If there is no
DOCTYPE it will return null.
Best Regards.
/******************************
Version info "object"
******************************/
function versionInfo()
{
this.xhtml="";
this.version="";
this.importance="";
}
function detectDoctype(){
var re=/\s+(X?HTML)\s+([\d\.]+)\s*([^\/]+)*\//gi;
var myversionInfo=new versionInfo();
/*********************************************
Just check for internet explorer.
**********************************************/
if(typeof document.namespaces != "undefined"){
if(document.all[0].nodeType==8)
re.exec(document.all[0].nodeValue);
else
return null;
}else{
if(document.doctype != null)
re.exec(document.doctype.publicId);
else
return null;
}
myversionInfo.xhtml=RegExp.$1;
myversionInfo.version=RegExp.$2;
myversionInfo.importance=RegExp.$3;
return myversionInfo;
}
var myversionInfo=detectDoctype();
if(myversionInfo != null){
alert(myversionInfo.xhtml);
alert(myversionInfo.version);
alert(myversionInfo.importance);
}
else{
alert("There is no DOCTYPE in the code!");
}
Jim Michaels написа:
Quote:
I can't get any "universal" code working that tries to detect whether the
document it's in is xhtml or html.
I found this, which tells me I have a hill to climb with no equipment.
http://javascript.about.com/library/bliebug.htm
>
I was going to use the document.doctype property if I could, but apparently
that isn't available unless I use strict. (just tried it with Strict, still
doesn't do anything).
>
here's what I've got. anybody got ideas that work or some pointers? I
don't have any money for books right now, and I wouldn't know which of 100's
of JS books to pick from.
>
I am using IE6, but I want this to be cross-browser.
>
<!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>
</head>
>
<body>
<script language="JavaScript" type="text/javascript">
//document.getElementsByTagName('!DOCTYPE') generates an "object", but what
type? element? if so, why won't element properties work?
document.write(document.doctype); //prints nothing
document.write(document.getElementsByTagName('html ').getAttribute("xmlns"));
//prints nothing
document.write(document.getElementsByTagName('!DOC TYPE').hasAttribute("-//W3C//DTD
XHTML 1.0 Transitional//EN")); //prints nothing
//if (document.getElementsByName('!DOCTYPE') != null ||
document.getElementsByName('html').getAttribute('x mlns') != null) {
// document.write(document.getElementsByName('html'). innerHTML);
//}
</script>
>
</body>
</html>
I'm really frustrated. I lack info.
Jim Michaels
