How to check a radio button with jQuery?

Question

I try to check a radio button with jQuery. Here\'s my code:

Answer 1

$("input[name=inputname]:radio").click(function() {
    if($(this).attr("value")=="yes") {
        $(".inputclassname").show();
    }
    if($(this).attr("value")=="no") {
        $(".inputclassname").hide();
    }
});