$("#anElementThatIsNotInTheDOM") will always return true. what you
want to check for is
$("#anElementThatIsNotInTheDOM").length > 0
or if you're feeling chipper slash efficient:
documentGetElementById("anElementThatIsNotInTheDOM")
it's common practise to save references to jQuery objects for various
purposes (scoping, efficiency, etc...), however it sounds like your
initial instinct to read more about plugin development is probably
correct :)
On Oct 4, 1:31 pm, Micky Hulse <[EMAIL PROTECTED]> wrote:
> I should also mention:
>
> I would love to write jQuery js like the pseudo PHP/JS example...
>
> Being able to not reference and cache an object until it exists, and
> then being able to use that cached object throughout my code,
> especially other functions.
>
> (Using class example from my previous post:)
> ===================
>
> class Myclass {
>
> ...
> ...
>
> function someClassMethod2() {
> $foo1 = $this->childObj1;
> }
>
> function someClassMethod2() {
> $foo1 = $this->childObj1;
> }
> ...
> ...
>
> }
>
> ===================
>
> I like the thought of grabbing a global from a function, that is only
> cached when the object exists, and avoiding the need to pass-in
> objects via function arguments.
>
> Hrmm, maybe I need to read more about jQuery plugins? :)
>
> Thanks!!!!
>
> Cheers,
> Micky
>
> On Oct 4, 10:18 am, Micky Hulse <[EMAIL PROTECTED]> wrote:
>
> > Hello,
>
> > I just have a quick question about jQuery best practices...
>
> > I have been wondering for a while now, is it bad practice for me to
> > make references to objects outside of the block of code they are used
> > in?
>
> > For example, in my master JS file I might have this code:
>
> > ===================
>
> > // Start closure:
> > $(function() {
>
> > var $parentObj = $('#parentContianer');
> > var $childObj1 = $('#childEle1');
> > var $childObj2 = $('#childEle2');
> > var $childObj3 = $('#childEle3');
> > var $childObj4 = $('#childEle4');
> > var $childObj5 = $('#childEle5');
> > var $childObj6 = $('#childEle6');
>
> > if($parentObj) { // Parent object exists, execute code block:
> > ... do something with child objects ....
> > }
>
> > });
>
> > // End closure.
>
> > ===================
>
> > HTML:
>
> > ===================
>
> > <body>
>
> > <div id="parentContianer">
> > <div id="#childEle1"></div>
> > <div id="#childEle2"></div>
> > <div id="#childEle3"></div>
> > <div id="#childEle4"></div>
> > <div id="#childEle5"></div>
> > <div id="#childEle6"></div>
> > </div>
>
> > </body>
>
> > ===================
>
> > Should I avoid referencing those child objects only until the parent
> > object exists?
>
> > I really like keeping all of my used variables at the top of my JS (so
> > I know what vars I am using and such), but I am just not sure how to
> > best handle object references... I do not want to do unecessary
> > lookups.
>
> > Is there anyway I could do something like a simple PHP class, but with
> > JS (psuedo js/php code below):
>
> > ===================
>
> > <?php
>
> > class Myclass {
>
> > var $parentObj = $('#parentContianer');
> > var $childObj1 = ''
> > var $childObj2 = ''
> > var $childObj3 = ''
> > var $childObj4 = ''
> > var $childObj5 = ''
> > var $childObj6 = ''
>
> > // Class constructor:
> > function Myclass() {
> > if($this->parentObj) {
> > $this->childObj1 = $('#childEle1');
> > $this->childObj2 = $('#childEle2');
> > $this->childObj3 = $('#childEle3');
> > $this->childObj4 = $('#childEle4');
> > $this->childObj5 = $('#childEle5');
> > $this->childObj6 = $('#childEle6');
> > Init(); // Call Init() method.
> > } else { return false; } // If parentObj does not exist,
> > quit.
> > }
> > function Init() {
> > $foo1 = $this->childObj1;
> > $foo2 = $this->childObj2;
> > ... Do more stuff with the child objects here ...
> > }
>
> > }
>
> > ?>
>
> > ===================
>
> > Basically, I want to keep my code organized and readable... But I also
> > want to keep the overhead minimal.
>
> > Hehe, am I making sense here?
>
> > Any tips/advice/links ya'll could send my way would be super
> > helpful!!!!
>
> > Thanks!
> > Cheers,
> > Micky Hulse
