是否可以使用PHP添加事件监听器？

Question

I'm creating a survey form using Smarty templates in which I want to attach an event with radio buttons of a particular question such that it pops-up a message when any one of them is clicked. So I want to add a click/change event listener on them but dont know how to do it using php. As I do not know the radio button id in advance (they are generated on the fly), I'm not sure if I can use Javascript here. Any solutions/suggestions?

Google search returns all sort of answers for adding event listeners for android and javascript which are of no use!

Answer 1

Simply add a class to the radio buttons, then using JavaScript/JQuery, you could add event listeners to the inputs as needed.

<script src="//ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript" src="myjsfile.js"></script>
<input type="radio" class="clickyradio" />
<input type="radio" class="clickyradio" />
<input type="radio" class="clickyradio" />

now in the file myjsfile.js

$(document).ready(function() {
   $('.clickyradio').click(function() {
      // whatever you want to happen when it gets clicked
      // "this" keyword will refer to the input element that got clicked

   });
});

if you need the click to communicate something to the server, put an ajax call within the click event handler.