Thanks, I thought I remembered reading about deprecating one of the
two forms, I just couldn't remember which and I couldn't find the post
again.
Why :checkbox vs input[type=checkbox]? I noticed a couple special
keywords that had colons in front, but I wasn't sure what their
purpose was.
Thanks,
Brandon
On Jun 19, 1:21 pm, Karl Swedberg <k...@englishrules.com> wrote:
> On Jun 19, 2009, at 2:10 PM, Brandon! wrote:
>
>
>
> > So I've always had a couple questions about forms and jQuery, so I
> > thought I'd finally ask and see if I can get a straight answer
> > (they're all pretty simple).
>
> > First question: When selecting a form element by it's attribute(s),
> > what's the proper format? Do I need the @ or not basically: input
> > [...@type="text"] or input[type="text"] I know that both formats work,
> > but I don't know which is preferred.
>
> Without the @. It was deprecated in 1.2 and removed in 1.3.
>
> > Second question: In regards to performance, is there a "best" order to
> > put attributes in? inp...@name^="line_id"]...@type="checkbox"] vs input
> > [...@type="checkbox"]...@name^="line_id"] Any good rule of thumb, or is
> > the outcome negligible?
>
> $(':checkbox[name^=line_id]')
>
> Not sure about performance. Probably negligible.
>
> > Third and final question: jQuery().attr('checked', true) or jQuery
> > ().attr('checked', 'checked')? I see it both ways, but I wasn't sure
> > if it makes a difference. XHTML tells us we want checked="checked",
> > but I wasn't sure.
>
> Here, .attr() is a bit of a misnomer, because it's really looking at
> DOM properties, not (x)HTML attributes. I'm pretty sure either one
> works, but I use .attr('checked', true)
>
> Actually, when I can get away with avoiding .attr() I usually do. For
> example, I would do:
>
> this.checked = true;
>
> rather than:
>
> $(this).attr('checked', true);
>
> --Karl
>
> ____________
> Karl Swedbergwww.englishrules.comwww.learningjquery.com
