Archive for January, 2011

How to add a class to the current slide in jQuery Cycle

posted in jQuery on January 26, 2011 - 7 Comments

I think that every web developer heard about jQuery Cycle plugin, and we all know that is the most simple to use, and the best regarding the options that it has, but that doesn’t mean is bullet proof. In some weird coincidence, I needed a css selector on the current slide ( something like class=”current” ), after I clicked “Inspect element”, I was surprised to find out that Cycle doesn’t have any kind of css selector on the slides ( what looney would need it ) ; so I start searching for a solution,  and that’s how we end up to the snippet of code bellow.

Here is the markup,

<ul id="slideshow">
      <li>
           <img src="path-to-slide1.jpg" width="400" height="300" alt="" />
      </li>
      <li>
           <img src="path-to-slide2.jpg" width="400" height="300" alt="" />
      </li>
     ... etc
 </ul>

and the js,

$('#slideshow').cycle({
     fx: 'fade',
     speed: 'slow',
     timeout: 3000,
     before: function(){
           $(this).parent().find('li.current').removeClass();
     },
      after: function(){
           $(this).addClass('current');
     }
});

I still don’t think this is the best approach to this problem, but it works, and if you know a better way, please leave a comment.

Here you will find a demo, to see it in action.

,

Checkbox tree with jQuery

posted in jQuery on January 20, 2011 - 8 Comments

Update:

With nothing to do, I remembered the failure with the checkbox tree, and I started re-thinking it. With nothing else on my mind, took me very short time to figure my mistakes; …so now i will update this post and the demo. Of course my opinion about checkboxtree jQuery plugin remains the same, but if you don’t want to use an entire plugin, then you can always use the code here.

Sometime ago I needed an “checkbox tree” ( a nested list with checkboxes in every node ), for options that have sub-options. I decided to write one of my own.

After some try & error, I come up with the following code :

Below is the new improved and corrected code.


(function($){

$('ul#checkboxes input[type="checkbox"]').each (
 function () {
  $(this).bind('click change', function (){
   if($(this).is(':checked')) {
    $(this).siblings('ul').find('input[type="checkbox"]').attr('checked', 'checked');
    $(this).parents('ul').siblings('input[type="checkbox"]').attr('checked', 'checked');
   } else {
    $(this).siblings('ul').find('input[type="checkbox"]').removeAttr('checked', 'checked');
   }
  });
 }
);

})(jQuery);

you can see it in action here. (updated demo, with the new code).

I also found this checkboxtree jQuery plugin . I gave it a try, and worked perfectly, and you just have to write:

$('ul#checkboxes').checkboxTree({ });

and you will have a checkboxtree. This plugin has a lot of options, that you will find on the plugin homepage.

I made a simple demo using the plugin, that you can see it here, but you can see a lot more here.

,