copy-url-to-highlight.js

javascript:{
  const text = getSelection().toString().trim();
  if (text.length > 0) {
    const urlToHighlight = new URL(location);
    urlToHighlight.hash = '#:~:text=' + encodeURIComponent(text);
    navigator.clipboard.writeText(urlToHighlight.href)
      .catch((error) => {
        alert(String(error));
      });
  }
}