How to find checked radiobuttons in jQuery from a list of radiobuttons
<p>In the below example I wish to select all the ":checked" radio buttons of the "radios" list. How to?</p>

<pre><code>var radios = someDiv.find("input[type=radio]");
if (radios.length &gt; 0)
{
    // I wish to find all the checked radio buttons in the
    // "radios" list - this doesn't work:
    var checkedRadios = radios.find(":checked");

    if (checkedRadios.length == 0)
        alert("You have to select an option stoopid");
}
</code></pre>
