if (navigator.clipboard) {
  const buttons = document.querySelectorAll("button[data-copy], a[data-copy]");
  for (const button of buttons) {
    button.classList.remove("hidden");
    button.onclick = () => {
      const target = document.querySelector(button.getAttribute("data-copy"));
      navigator.clipboard.writeText(target.textContent).then(
        (_) => (button.innerText = "kopiert!"),
        (_) => (button.innerText = "nicht unterstützt")
      );
    };
  }
}