<input type="radio" id="html" name="fav_language" value="HTML">
<label for="html">HTML</label><br>
<input type="radio" id="css" name="fav_language" value="CSS">
<label for="css">CSS</label><br>
<input type="radio" id="javascript" name="fav_language" value="JavaScript">
<label for="javascript">JavaScript</label>

 document.querySelectorAll('input[type="radio"]').forEach(function(item){
        item.addEventListener('change', function(){
            if(item.value=="HTML"){
                console.log("HTML is selected");
            }
        });
    });