Question

In the below example I wish to select all the “:checked” radio buttons of the “radios” list. How to?

var radios = someDiv.find("input[type=radio]");
if (radios.length > 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");
}

Answer 1

To make your code work as it is, you just need to replace find by filter

var checkedRadios = radios.filter(":checked");

Unless you have any specific reason to make a 2 step selection, I’d recommend you to get selected radio buttons with one selector

var checkedRadios = someDiv.find("input[type=radio]:checked");