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POCheckboxes filter using jQuery
 

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    <p>I'm trying to make the following code work, but my jQuery skills are so basic, I can't find the problem</p> <p>This code is meant to filter a list based on arrays of checkboxes</p> <p>The code is very probably bug free</p> <p>The problem certainly comes from something stupid like not declaring correctly, not testing in the right conditions or not calling a required script</p> <p>Thanks a million!</p> <pre><code>&lt;html&gt; &lt;head&gt; &lt;script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5/jquery.min.js"&gt;&lt;/script&gt; &lt;script&gt; $(document).ready(function(){ $("#options input.type_check").click(function() { if($(this).is(':checked')) { $("#events li."+$(this).attr('id')).removeClass('type_hidden'); if(!$("#events li."+$(this).attr('id')).hasClass('start_hidden')) { $("#events li).not(".type_hidden, .start_hidden").slideDown(); } } else { $("#events li."+$(this).attr('id')).addClass('type_hidden'); $("#events li."+$(this).attr('id')).slideUp(); } return false; }); $("#options input.start_check").click(function() { if($(this).is(':checked')) { $("#events li."+$(this).attr('id')).removeClass('start_hidden'); if(!$("#events li."+$(this).attr('id')).hasClass('type_hidden')) { $("#events li).not(".type_hidden, .start_hidden").slideDown(); } } else { $("#events li."+$(this).attr('id')).addClass('start_hidden'); $("#events li."+$(this).attr('id')).slideUp(); } return false; }); }); &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;p&gt;Types:&lt;/p&gt; &lt;div&gt;&lt;input name="type[]" type="checkbox" id="type_0" value="0" class="type_check" checked="checked" /&gt;&lt;label for="type_0"&gt;Type 0&lt;/label&gt;&lt;/div&gt; &lt;div&gt;&lt;input name="type[]" type="checkbox" id="type_1" value="1" class="type_check" checked="checked" /&gt;&lt;label for="type_1"&gt;Type 1&lt;/label&gt;&lt;/div&gt; &lt;div&gt;&lt;input name="type[]" type="checkbox" id="type_2" value="2" class="type_check" checked="checked" /&gt;&lt;label for="type_2"&gt;Type 2&lt;/label&gt;&lt;/div&gt; &lt;div&gt;&lt;input name="type[]" type="checkbox" id="type_3" value="3" class="type_check" checked="checked" /&gt;&lt;label for="type_3"&gt;Type 3&lt;/label&gt;&lt;/div&gt; &lt;div&gt;&lt;input name="type[]" type="checkbox" id="type_4" value="4" class="type_check" checked="checked" /&gt;&lt;label for="type_4"&gt;Type 4&lt;/label&gt;&lt;/div&gt; &lt;p&gt;Starts:&lt;/p&gt; &lt;div&gt;&lt;input name="start[]" type="checkbox" id="start_072009" value="072009" class="start_check" checked="checked" /&gt;&lt;label for="type_072009"&gt;July 2009&lt;/label&gt;&lt;/div&gt; &lt;div&gt;&lt;input name="start[]" type="checkbox" id="start_082009" value="082009" class="start_check" checked="checked" /&gt;&lt;label for="type_082009"&gt;August 2009&lt;/label&gt;&lt;/div&gt; &lt;div&gt;&lt;input name="start[]" type="checkbox" id="start_092009" value="092009" class="start_check" checked="checked" /&gt;&lt;label for="type_092009"&gt;September 2009&lt;/label&gt;&lt;/div&gt; &lt;div&gt;&lt;input name="start[]" type="checkbox" id="start_102009" value="102009" class="start_check" checked="checked" /&gt;&lt;label for="type_102009"&gt;October 2009&lt;/label&gt;&lt;/div&gt; &lt;p&gt;Events&lt;/p&gt; &lt;ul id="events"&gt; &lt;li id="a1768" class="type_0 start_072009"&gt;Event 1&lt;/li&gt; &lt;li id="a2190" class="type_1 start_072009"&gt;Event 2&lt;/li&gt; &lt;li id="a2191" class="type_2 start_072009"&gt;Event 3&lt;/li&gt; &lt;li id="a1864" class="type_2 start_082009"&gt;Event 4&lt;/li&gt; &lt;li id="a1679" class="type_3 start_082009"&gt;Event 5&lt;/li&gt; &lt;li id="a2042" class="type_0 start_092009"&gt;Event 6&lt;/li&gt; &lt;li id="a1717" class="type_4 start_092009"&gt;Event 7&lt;/li&gt; &lt;li id="a1917" class="type_4 start_092009"&gt;Event 8&lt;/li&gt; &lt;li id="a1767" class="type_4 start_092009"&gt;Event 9&lt;/li&gt; &lt;li id="a1866" class="type_2 start_102009"&gt;Event 10&lt;/li&gt; &lt;/ul&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
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