How to check if all checkboxes inside a div are checked using jQuery?
<p>this fails:</p>

<pre><code>var all_checkboxes = $('#myDiv input[type="checkbox"]');

if (all_checkboxes.is(':checked')) {
   alert('they are all checked');
}
</code></pre>

<p>it alerts they are all checked even if just one and not all is checked.</p>
