Customize audio player with javascript

I want to customize the audio player (essentially remove the volume control and the time display).
The following code is working but when I remove the “controls” argument in the <audio> and add javascript to add a play/pause button, the javascript code is never executed. What is the correct way to call javascript in panel?

import panel as pn
import os

def create_audio_player(wav_file_path):
    """
    Creates an audio player from a static WAV file.

    Args:
        wav_file_path: Absolute path to the WAV file.

    Returns:
        Panel HTML pane containing the audio player, and the audio directory.
    """
    if not os.path.exists(wav_file_path):
        return pn.pane.Alert(f"Audio file not found: {wav_file_path}", alert_type="danger"), None

    audio_filename = os.path.basename(wav_file_path)
    audio_dir = os.path.dirname(os.path.abspath(wav_file_path))

    html_pane = pn.pane.HTML(
        f"""
        <audio controls>
            <source src="/audio/{audio_filename}" type="audio/wav">
            Your browser does not support the audio element.
        </audio>
        """
    )

    return html_pane, audio_dir

if __name__ == '__main__':
    wav_file_path = "/home/toto/wav/20101018.2048.LCP_CaVousRegarde.wav" #replace with your audio file.

    html_pane, audio_dir = create_audio_player(wav_file_path)

    if audio_dir is not None:
        pn.serve(
            pn.Column(pn.pane.Markdown("## Audio Player"), html_pane),
            static_dirs={"audio": audio_dir},  # Serve the audio directory at /audio
            dev=True,
        )
    else:
        pn.serve(html_pane)

Do you have the full code you’re trying to run? At least with the Javascript part?