get doc dec info

26 Jan 2007 04:31 pm

P: 1381

Anyone know a simple way to get doctype declaration/definition info useing javascript. Only needs to work in IE

e.g.

This sort of thing:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">

Cheers

creator of Talklets
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26 Jan 2007 04:36 pm

Phil Teare

P: 1381

OK how does that work. The second I give up and ask a forum, I find the goodies I need. I've not tested, but this certainly looks like the trick:

Code:

/******************************
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!");
}

creator of Talklets
Talklets ,

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26 Jan 2007 05:56 pm

pixeldiva

P: 345
L: London

Phil Teare wrote:

OK how does that work. The second I give up and ask a forum, I find the goodies I need.

That would be Murphy's Law of Google. Smile