jQuery addClass example
Change class name on click in jQuery
HTML
<input type='radio' name='name' value='1'/> 1
<input type='radio' name='name' value='2'/>2
<input type='radio' name='name' value='3'/>3
JavaScript
$('input[type="radio"]').on('change', function(){
console.log($(this).val() + ' changed');
})