test.js

function requestPrompt() {
   const offset = $("#mainCanvas").offset();
   const $spinner = $("#chatgpt-spinner").css({ top: offset.top, left: offset.left, display: "block" });
   const prompt = $("#prompt").val();
   const serviceURL = "ChatGPT/PromptRequest";

   $.ajax({
       type: "POST",
       url: serviceURL,
       contentType: "application/json",
       data: JSON.stringify({ text: prompt }),
       success: successFunc,
       error: errorFunc
   });

   function hideSpinner() {
       $spinner.css({ display: "none" });
   }

   function successFunc(data) {
       TXTextControl.selection.load(TXTextControl.StreamType.HTMLFormat, data);
       hideSpinner();
   }

   function errorFunc(data) {
       console.log(data);
       hideSpinner();
   }
}