how to set radio option checked onload with jQuery

Question

How to set radio option checked onload with jQuery?

Need to check if no default is set and then set a default

Answer 1

I think you can assume, that name is unique and all radio in group has the same name. Then you can use jQuery support like that:

$("[name=gender]").val(["Male"]);

Note: Passing array is important.

Conditioned version:

if (!$("[name=gender]:checked").length) {
    $("[name=gender]").val(["Male"]);
}