Javascript does not have a built-in function to produce a beep sound directly. However, you can achieve a similar effect using the HTML5 Audio API to play a short audio file or use the 'navigator.vibrate()' API to vibrate the device if it supports it.

<!DOCTYPE html>
<html>
<head>
  <title>Beep Sound in JavaScript</title>
</head>
<body>
  <button onclick="playBeep()">Beep</button>

  <script>
    function playBeep() {
      // Create an audio element and set its source to an audio file
      const audioElement = new Audio('path/to/beep-sound.mp3');

      // Play the audio
      audioElement.play();
    }
  </script>
</body>
</html>


Note that you should replace '/path/to/beep-sound.mp3' with the actual path to your audio file.