You can simply use the method change
of JQuery to get the value of the current radio checked with the following code:
$(document).on('change', '[type="radio"]', function() {
var currentlyValue = $(this).val(); // Get the radio checked value
alert('Currently value: '+currentlyValue); // Show a alert with the current value
});
You can change the selector '[type="radio"]'
for a class or id that you want.