(Please tell me if this is silly or I am barking up the wrong tree)
Can someone check this please on pre W3C DOM browsers :-
function getDocumentRoot ()
{
for ( e in document.childN odes)
if ( document.childN odes[e].nodeName == "HTML")
return document.childN odes[e];
return document.body;
}
if (!document.docu mentElement)
document.docume ntElement = getDocumentRoot ();
There's an html test page here :- http://www.aarongray.org/Test/JavaSc...ment-test.html
There's also a test for document.getEle mentById() emulation here :- http://www.aarongray.org/Test/JavaSc...ById-test.html
Many thanks in advance,
Aaron 21 1933
"Aaron Gray" <an********@gma il.comwrote in message
news:6d******** ****@mid.indivi dual.net...
if (!document.docu mentElement)
document.docume ntElement = getDocumentRoot ();
Minor behavioural amendment :-
if (!document.docu mentElement)
{
document.docume ntElement = getDocumentRoot ();
document.docume ntElement.readO nly = true;
}
Aaron
Aaron Gray a écrit :
"Aaron Gray" <an********@gma il.comwrote in message
news:6d******** ****@mid.indivi dual.net...
Your page-test works well with my Fx.3
(while it is not W3C compliant)
> if (!document.docu mentElement) document.docume ntElement = getDocumentRoot ();
Minor behavioural amendment :-
if (!document.docu mentElement)
{
document.docume ntElement = getDocumentRoot ();
on my idea the next line will be not used.
'HTML' has been written on the page
so, probably, there is no more existing JS.
document.docume ntElement.readO nly = true;
}
if (!document.docu mentElement)
{
document.docume ntElement = getDocumentRoot ();
document.docume ntElement.readO nly = true;
alert('vu');
}
the alert doesn't fire
--
sm
"SAM" <st************ *********@wanad oo.fr.invalidwr ote in message
news:48******** *************@n ews.orange.fr.. .
Aaron Gray a écrit :
>"Aaron Gray" <an********@gma il.comwrote in message news:6d******* *****@mid.indiv idual.net...
Your page-test works well with my Fx.3
(while it is not W3C compliant)
>> if (!document.docu mentElement) document.docume ntElement = getDocumentRoot ();
Minor behavioural amendment :-
if (!document.docu mentElement) { document.docume ntElement = getDocumentRoot ();
on my idea the next line will be not used.
'HTML' has been written on the page
so, probably, there is no more existing JS.
Great.
> document.docume ntElement.readO nly = true; }
if (!document.docu mentElement)
{
document.docume ntElement = getDocumentRoot ();
document.docume ntElement.readO nly = true;
alert('vu');
}
the alert doesn't fire
Okay Fx.3 does not support the readOnly attribute then.
Thats annoying as AFAICS theres no real fix for that :(
Aaron
On Jul 11, 11:55*am, "Aaron Gray" <ang.use...@gma il.comwrote:
(Please tell me if this is silly or I am barking up the wrong tree)
Can someone check this please on pre W3C DOM browsers :-
Don't do this:
* * {
* * * * for ( e in document.childN odes)
* * * * * * if ( document.childN odes[e].nodeName == "HTML")
* * * * * * * * return document.childN odes[e];
* * * * return document.body;
* * }
for in enumerates and does this up the prototype chain. In Firefox,
"item" will be enumerated, e.g document.childN odes['item']. This is
inefficient and undesirable.
>
Aaron
"dhtml" <dh**********@g mail.comwrote in message
news:78******** *************** ***********@l64 g2000hse.google groups.com...
On Jul 11, 11:55 am, "Aaron Gray" <ang.use...@gma il.comwrote:
>(Please tell me if this is silly or I am barking up the wrong tree)
Can someone check this please on pre W3C DOM browsers :-
Don't do this:
>{ for ( e in document.childN odes) if ( document.childN odes[e].nodeName == "HTML") return document.childN odes[e]; return document.body; }
for in enumerates and does this up the prototype chain. In Firefox, "item" will be enumerated, e.g document.childN odes['item']. This is inefficient and undesirable.
Okay so I use Array iteration rather than object iteration, thus :-
for ( var i = 0, N = document.childN odes.length; i < N; ++i)
if ( document.childN odes[i].nodeName == "HTML")
return document.childN odes[i];
return document.body;
I just learned that lesson else where :)
Thanks,
Aaron
Aaron Gray wrote:
>
(Please tell me if this is silly or I am barking up the
wrong tree)
Yes and Yes.
Can someone check this please on pre W3C DOM browsers :-
There is no need because Netscape 4 and IE 4 have no - childNodes -
collections/nodeLists. IE 4 had - children - collections, but not on the
document object if I recall correctly) and Netscape 4 had no means of
accessing an HTML element (because it could not be made into a layer
with CSS).
function getDocumentRoot ()
{
for ( e in document.childN odes)
The for-in statement throws and exception if the expression on the right
of the - in - is not type-convertible into an object, so IE 4 and
Netscape 4 exit here.
if ( document.childN odes[e].nodeName == "HTML")
return document.childN odes[e];
return document.body;
Netscape 4 has no - docuemnt.body - either.
}
<snip>
Richard.
"Richard Cornford" <Ri*****@litote s.demon.co.ukwr ote in message
news:g5******** ***********@new s.demon.co.uk.. .
Aaron Gray wrote:
>> (Please tell me if this is silly or I am barking up the wrong tree)
Yes and Yes.
Right :)
>Can someone check this please on pre W3C DOM browsers :-
There is no need because Netscape 4 and IE 4 have no - childNodes -
collections/nodeLists. IE 4 had - children - collections, but not on the
document object if I recall correctly) and Netscape 4 had no means of
accessing an HTML element (because it could not be made into a layer with
CSS).
> function getDocumentRoot () { for ( e in document.childN odes)
The for-in statement throws and exception if the expression on the right
of the - in - is not type-convertible into an object, so IE 4 and Netscape
4 exit here.
Okay that has been moded to an array indexing for loop.
> if ( document.childN odes[e].nodeName == "HTML") return document.childN odes[e]; return document.body;
Netscape 4 has no - docuemnt.body - either.
Right
> }
<snip>
Richard.
Great, thats cut the lower end off at IE4 and NN4.
Thanks,
Aaron
Aaron Gray meinte:
Okay so I use Array iteration rather than object iteration, thus :-
for ( var i = 0, N = document.childN odes.length; i < N; ++i)
if ( document.childN odes[i].nodeName == "HTML")
return document.childN odes[i];
return document.body;
I just learned that lesson else where :)
Ok. Now add curly brackets - and it looks more like JavaScript ("N"
should become "n", too). You know JSLint [1]?
Gregor
[1] http://www.jslint.com/
-- http://photo.gregorkofler.at ::: Landschafts- und Reisefotografie http://web.gregorkofler.com ::: meine JS-Spielwiese http://www.image2d.com ::: Bildagentur für den alpinen Raum
"Gregor Kofler" <us****@gregork ofler.atwrote in message
news:aE******** *****@nntpserve r.swip.net...
Aaron Gray meinte:
>Okay so I use Array iteration rather than object iteration, thus :-
for ( var i = 0, N = document.childN odes.length; i < N; ++i) if ( document.childN odes[i].nodeName == "HTML") return document.childN odes[i]; return document.body;
I just learned that lesson else where :)
Ok. Now add curly brackets - and it looks more like JavaScript ("N" should
become "n", too). You know JSLint [1]?
Gregor
[1] http://www.jslint.com/
Thanks, have not got to Lint'ing things yet. I did not like that N either :)
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