Monitoring when a radio button is unchecked

Note this behavior when getting radio input values:

$('input[name="myRadio"]').change(function(e) { // Select the radio input group

    // This returns the value of the checked radio button
    // which triggered the event.
    console.log( $(this).val() ); 

    // but this will return the first radio button's value,
    // regardless of checked state of the radio group.
    console.log( $('input[name="myRadio"]').val() ); 

});

So $('input[name="myRadio"]').val() does not return the checked value of the radio input, as you might expect -- it returns the first radio button's value.

Handle the change event on the radio group, not each button. Then look to see which one is checked.

Here's is some untested code that hopefully shows what I'm talking about :)...

$("input[name='type']").change(function(e){
    if($(this).val() == 'history') {
        $year.css({display:'none'});
        $datespan.fadeIn('fast');
    } else {
        $datespan.css({display:'none'});
        $year.fadeIn('fast');
    }

});