you can probably do something like this
$('[data-key="field_5979fbd93d722"] input[type="radio"]:checked').change(e) {
alert(e.target.value);
}
if you extend the acf object like I do in these examples https://github.com/Hube2/acf-dynamic-ajax-select-example/tree/master/unique-repeater-checkbox you can do this
alert(e.$el.val());