Thank you, guys... I tried the last method as implemented/adapted by Diego,
and it works! :-)
Unfortunately, neither "contains" nor "compareDocumentPosition" are being
recognized as methods for the "document" node in IE6 or 7, as you can test
yourselves:
alert(document.contains);
alert(window.contains);
alert(document.compareDocumentPosition);
alert(window.compareDocumentPosition);
Any ideas why these didn't work for me?
Diogo
On Mon, Dec 1, 2008 at 10:58 AM, Diego Perini <[EMAIL PROTECTED]>wrote:
>
> ricardo,
>
> On 1 Dic, 05:35, ricardobeat <[EMAIL PROTECTED]> wrote:
> > I always miss the obvious stuff :)
> >
> > I ended up with this, it's a lot faster than Diogo's code but still
> > requires you to traverse the document all the way up. John Resig's
> > 'contains' function is at least twice faster in FF though, so it seems
> > like the perfect solution.
> >
> > $.fn.inDOM = function(){
> > var el = this[0];
> > while (el.parentNode) el = el.parentNode;
> > return el == this[0].ownerDocument;
> >
> > };
> >
>
> To make it less dependent:
>
> $.fn.inDOM = function(){
> var el = this[0];
> while (el.parentNode) el = el.parentNode;
> return el.nodeType == 9;
> };
>
> now you can also pass elements present in other DOM contexts.
>
> Don't know if this modifies the intended usage, this will most
> generally tell if the element is an orphan (not attached to any
> document).
>
> To account for both usages, it will be necessary to pass context
> information (an extra parameter to specify the desired context).
>
> --
> Diego
>
> > - ricardo
> >
> > On 30 nov, 19:43, "Ariel Flesler" <[EMAIL PROTECTED]> wrote:
> >
> > > Yeah, parentNode is not good enough.
> >
> > > On Sun, Nov 30, 2008 at 4:35 PM, ricardobeat <[EMAIL PROTECTED]>
> wrote:
> >
> > > > Hi,
> >
> > > > It seems the ownerDocument is set for the created element even if
> it's
> > > > not in the DOM, it's the document where jQuery was loaded in. A
> simple
> > > > check for parentNode or offsetParent would do:
> >
> > > > $.fn.inDOM = function(){
> > > > return !!this.parentNode; //boolean
> > > > });
> >
> > > > parentNode returns faster for elements in the DOM, while offsetParent
> > > > returns faster for elements not in the DOM (in FF3 at least).
> >
> > > > Hope I'm not missing anything. It surely would need a better name :]
> >
> > > > cheers,
> > > > - ricardo
> > > > On 29 nov, 14:46, Ariel Flesler <[EMAIL PROTECTED]> wrote:
> > > >> 'body' should be replaced by 'html'.
> >
> > > >> Maybe we can make it faster by consulting expandos like
> > > >> ownerDocument ?
> >
> > > >> --
> > > >> Ariel Fleslerhttp://flesler.blogspot.com
> >
> > > >> On Nov 27, 12:52 am, diogobaeder <[EMAIL PROTECTED]> wrote:
> >
> > > >> > Hi there,
> >
> > > >> > I'm new here (and in jQuery), but even though I'd like to propose
> some
> > > >> > simple but usefull method to the jQuery object (at core.js) to
> tell
> > > >> > the API user if an element exists in the document. I've tried to
> build
> > > >> > one as follows:
> >
> > > >> > [CODE]
> > > >> > (function($) {
> >
> > > >> > $.fn.inDOM = function() {
> > > >> > return !!this.parents('body').length;
> > > >> > };
> >
> > > >> > })(jQuery);
> >
> > > >> > jQuery(document).ready(function(){
> > > >> > var jEl = $('.someExistingClass');
> >
> > > >> > // Should be in DOM
> > > >> > console.debug(jEl.inDOM());
> >
> > > >> > // Removing the element
> > > >> > jEl.remove();
> >
> > > >> > // Should NOT be in DOM
> > > >> > console.debug(jEl.inDOM());});
> >
> > > >> > [/CODE]
> >
> > > >> > So, if the client sets a variable as a jQuery object, and at some
> > > >> > point of the code the DOM element within it can be removed, he/she
> can
> > > >> > test if it really was. OK, I know it sounds unsignificant, but I
> think
> > > >> > it would still be usefull.
> >
> > > >> > Thanks!
> >
> > > >> > Diogo Baeder
> >
> > > --
> > > Ariel Fleslerhttp://flesler.blogspot.com
> >
>
--
Diogo Baeder
http://www.diogobaeder.com.br
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