JSFiddle - React, Tailwind, and code Playground

HTML

<input type="radio" name="radioButtonGroup" value="button1" />
<input type="radio" name="radioButtonGroup" value="button2" />
<input type="radio" name="radioButtonGroup" value="button3" />

JavaScript

$(document).ready(function(){   
    var selectedRadio = null;
    $("input:radio").change(function(){        
        if(selectedRadio != null){
           alert(selectedRadio.val());   
        }
        selectedRadio = $(this);
    });
});