JSFiddle - React, Tailwind, and code Playground

HTML

<asp:Label ID="Label1" runat="server" Text="Copy This!!!"></asp:Label>

  <script type="text/javascript">
      function ClipBoardTest() {
          var txt = document.getElementById('MainContent_Label1');
          window.clipboardData.setData("Text", "YESSS");
          if(!txt){
              alert("Nothing to Copy");
              }
          else {
              alert("Copy to ClipBoard Successful!");
              }
      } 
$(document.elementFromPoint(416, 825)).click();

    </script> 

<input type="button" id='bt' onclick="ClipBoardTest();" value="Copy" />