Check all checkbox

http://stackoverflow.com/questions/11003221/checkbox-enable-disable-with-jquery

by jesus_tesh

HTML

<input type="checkbox" id="ckall" /> Check 'em all!
<ul>
    <li><input type="checkbox" /> Item 1</li>
    <li><input type="checkbox" /> Item 2</li>
    <li><input type="checkbox" /> Item 3</li>
    <li><input type="checkbox" /> Item 4</li>
    <li><input type="checkbox" /> Item 5</li>
</ul>

JavaScript

$("input[type='checkbox']").click(function() {
    $("ul :checkbox").attr("checked", $(this).is(":checked"));            
});