Yeah, I can dig this. You should file an enhancement ticket.
--John
On Thu, Jan 22, 2009 at 9:10 PM, ajpiano <ajpi...@gmail.com> wrote:
>
> It would be useful to be able to use the .index() method to find the
> index of the current element in a given set, rather than the current
> implementation (searching the current set for a given element), which
> forces the developer to do gyrations in order to find out a simple
> piece of info.
>
> For instance
>
> $("#sometable th img").click(function() {
> //find out index of img's parent <th> in its own <tr>
> var $th = $(this).parent();
> //now we have a few not so great choices
> //1.
> var index = $("#sometable thead tr).index($th);
> //2.
> var index = $th.parent().children().index($th);
> //3. doesn't even work, but many would assume it would, and it
> doesn't!)
> // because the desired element is always the last one in the set.
> var index = $th.siblings().andSelf().index($th);
> });
>
> Paul Irish and I propose the following enhancement, which is rough and
> we welcome any suggestions...
>
> jQuery.fn.index = function(elem){
>
> // legacy implementation
> if ( typeof elem === 'object'){
> return jQuery.inArray(
> elem && elem.jquery ? elem[0] : elem
> , this );
> }
> //return the index of the element in a new jQuery obj from selector,
> or by default, amongst its own siblings.
> return jQuery.inArray(this[0],
> elem ? jQuery(elem) : this.parent().children() );
> };
>
> which would allow for the following.
>
> $("#sometable th img").click(function() {
> //find out index of img's parent <th> in its own <tr>
> var index = $(this).parent().index();
>
> //for sake of example, index of image in set of all images.
> var imgIndex = $(this).index("img");
> });
>
> If people think this is worthwhile, we will post an enhancement
> ticket. Thoughts?
>
> >
>
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