I think Eric Hobo's piece is probably faster for any collection
regardless of size, since it's essentialy just document.getElementById
('toto').childNodes
On Jan 5, 2:02 pm, Will Anderson <javayaht...@gmail.com> wrote:
> I think comparing two strings would be faster than deciding whether a
> string begins with another string.
> Also, doing one selection would almost always be faster than doing 3,
> so I'd say that the first piece of code from the OP would be faster.
> It should only require one loop through the DOM tree.
>
> I think the solution that used the "each" would be a little bit slower
> because there would be some overhead from using the "each" function,
> rather than simply traversing the jQuery array with .hide().
>
> Now, I say all this from the perspective of a Computer Science major.
> I've not looked at the jQuery source code for this, so I could be
> wrong about the way it does this.
>
> Of course for a small number of elements (and yes, 50 is still small),
> it shouldn't make a bit difference (though another consideration is
> the size of the JS, in which case the first piece of code from the OP
> is definitely better).
>
> On Jan 5, 10:53 am, MorningZ <morni...@gmail.com> wrote:
>
> > And another way:
>
> > $("div[id^='toto']").hide();
>
> > although i couldn't see one or the other or even the other being much
> > faster considering that the selector would have to go through all the
> > elements to see if *any* element on the page either (1) has the
> > specified class or (2) has the specified id
>
> > but i'm no DOM expert, just seems to make sense :-/
>
> > On Jan 5, 10:50 am, Christof Donat <cdo...@gmx.de> wrote:
>
> > > Hi,
>
> > > > And try something like:
>
> > > > var toto = [];
> > > > $('.toto').each(function(){
> > > > var elem = $(this);
> > > > toto[elem.attr('ref')] = elem;
> > > > }
>
> > > > Then, to hide the "toto" div with ref="1" or ref="2", just call:
>
> > > > toto[1].hide(); toto[2].hide();
>
> > > Why not use this:
>
> > > var toto = $('.toto');
> > > toto[1].hide(); toto[2].hide();
>
> > > That should be the same.
>
> > > Appart from that I think, that Jean Babtiste wanted to hide all elements
> > > at
> > > the same time. I'd expect his first ( $('.toto').hide() ) version to be
> > > usually faster, but I'm not shure about that.
>
> > > Christof
