如何检测Chrome扩展程序是否已安装在用户浏览器中

Question

There are a lot of answers related to this question, but most of those answer information are deprecated years ago by chrome browser.

I need a working example, how to detect google chrome browser addon/extension which is installed in users browser using (javascript/any method).

If i use event detection, there is a addon called " Luminous: JavaScript events blocker " which blocks all event detection and bypass the events generated by javascript.

Answer 1

   <script>
(function(w, u){
  var intervalLuminous = null;
  var isLuminousInstalled = false;
  var setLuminousDetected = function(){
    isLuminousInstalled = true;
    alert('Luminous: JavaScript events blocker installed!');
  }
  var checkLuminous = function(){
    if (document.getElementById('luminous-options') || document.getElementById('luminous-data')) {
      clearInterval(intervalLuminous);
      setLuminousDetected();
    }
  }

  intervalLuminous = setInterval(function(){
    checkLuminous();
  }, 10);
  if(!intervalLuminous){
    setLuminousDetected();
  }

})(window, undefined);
</script>