how to communicate with your channel using plugin?

Hi Team

I have a channel, but i want my channel to be able to communicate with my plugin. I am using jquery to do this with a button that send a request using 'GET' method. Please help as i want to read my channel fieldID, what can i do to improve this from the client side? The back end does indeed read api key and added the extra field 'button_state' under my channel.

<script
src="https://code.jquery.com/jquery-3.3.1.js"integrity="sha256-2Kok7MbOyxpgUVvAk/HJ2jigOSYS2auK4Pfzbm7uH60="crossorigin="anonymous"></script>
<script type="text/javascript">
function OPENDOOR() {
           $.ajax({
               url:"https://api.thingspeak.com/apps/plugins.json?api_key=M****",

               type: 'GET',
               success: function(data) {
               //called when successful
                 //console.log(data);
                 $('#singlebutton').on('click', function (e) {
                  $('#singlebutton').append(data);
                 })
             }
                                     
           });
       }
          
</script>