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copied!<p>First of all you should wrap your checkboxes with <code><label></code> so that when the label is clicked the checkbox is also toggled (user friendly).</p> <p>Then i recommend using lists to group your checkboxes. (you can style them with css in any you want).</p> <p>Something like this:</p> <pre><code><ul> <li class="entityCheckboxHeader1" > <label><input type="checkbox" id="entityCheckboxHeader1">Company</label> <ul> <li><label><input id="modalEntity11" class="entity1" type="checkbox" name="company[]">Microsoft</label></li> <li><label><input id="modalEntity12" class="entity2" type="checkbox" name="company[]">Apple</label></li> </ul> </li> <li class="entityCheckboxHeader2"> <label><input type="checkbox" id="entityCheckboxHeader2">Country</label> <ul> <li><label><input id="modalEntity21" class="entity3" type="checkbox" name="country[]">USA</label></li> <li><label><input id="modalEntity22" class="entity4" type="checkbox" name="country[]">UK</label></li> </ul> </li> </ul> </code></pre> <p>Now you can use this very simply jquery to fullfill your task:</p> <pre><code>$("li :checkbox").change(function(){ $(this).closest("li").find("ul :checkbox").prop("checked", $(this).is(":checked")); }); </code></pre> <p> <a href="http://jsfiddle.net/eKTAk/3/" rel="nofollow">http://jsfiddle.net/eKTAk/3/</a></p> <p>Note that I have changed the names of the fields so that you can read them like this in php a script (post form):</p> <pre><code>$companies = $_POST['companies']; //Gets the array of values for the checked companies $countries = $_POST['countries']; //Gets the array of values for the checked companies </code></pre>

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