if you do something like:
$("div").find("span").css('background':'red').end().css('background':'green');
spans will be red, and the divs will be green.
.end() reset the chain to the first selector
On Wed, Apr 22, 2009 at 2:05 PM, MorningZ <morni...@gmail.com> wrote:
>
> Say you have the html of
>
> <div>
> <span>One</span>
> <span>Two</span>
> <span>Three</span>
> </div>
>
> and say:
> var $obj = $("div");
>
> your jQuery object, $obj, will be just the <div> tag
>
> Now if you say
>
> var $obj = $("div").find("span");
>
> that would first be an object representing the <div> and the ".find()"
> makes it be an object of the 3 <span> tags
>
> If the statement was (and granted this doesn't make sense, but just an
> example)
>
> var $obj = $("div").find("span").end();
>
> that would be just the <div> tag again.... although walking through
> the selector, $obj would have been the <div>, then would have
> represented the "found" <span> tags, called ".end()" backs off the
> ".find()" and goes back to the div
>
> thinking of the chained command like a deck of cards helps :-)
>
>
>
>
> On Apr 22, 12:41 pm, JKippes <jessandthec...@gmail.com> wrote:
> > Please referencehttp://docs.jquery.com/How_jQuery_Works, the
> > Chainability segment.
> >
> > I'm confused on the given description of .end():
> >
> > You can take this even further, by adding or removing elements from
> > the selection, modifying those elements and then reverting to the old
> > selection, for example:
> > $("a")
> > .filter(".clickme")
> > .click(function(){
> > alert("You are now leaving the site.");
> > })
> > .end()
> >
> > <a href="http://google.com/"; class="clickme">I give a message when you
> > leave</a>
> >
> > Methods that modify the jQuery selection and can be undone with end(),
> > are the following:
> >
> > add(),
> > children(),
> > eq(),
> > filter(),
> > find(),
> > next(),
> > not(),
> > parent(),
> > parents(),
> > siblings() and
> > slice().
> >
> > What does reverting and undone mean here? When I run the code, the
> > link click event runs the alert, I hit Ok, and it passes me to
> > Google. So the words reverting and undone confuse me, as I would take
> > this to mean the modified click event would be "undone" and never
> > executed. So what does .end() really do? A friend thinks it could
> > be a chain terminator, though he never uses it. Is it just a cleanup
> > thing part of good practice and not technically needed?
> >
> > Thanks for educating a real jQuery beginner.
