"Essentially the end method returns the result of the very first
selector. "
Not an accurate statement
if you say
var $obj = $("div").find("span").find("img");
and do
$obj.end();
that would be a selection of <span> tags, *not* the first selector of
just the <div> tag
Right from the docs
"Revert the most recent 'destructive' operation, changing the set of
matched elements to its previous state (right before the destructive
operation)."
On Apr 22, 2:20 pm, "Andy Matthews" <li...@commadelimited.com> wrote:
> Essentially the end method returns the result of the very first selector.
>
> Andy matthews
>
> -----Original Message-----
> From: jquery-en@googlegroups.com [mailto:jquery...@googlegroups.com] On
>
> Behalf Of MorningZ
> Sent: Wednesday, April 22, 2009 1:06 PM
> To: jQuery (English)
> Subject: [jQuery] Re: Can you help me understand .end() ?
>
> 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.
