backup localstorage

/*
  a bookmarklet that dumps localStorage
  and saves the stringified JSON
  to your downloads folder.

  1. createa new bookmark (page)
  2. in the address field type:
     javascript: .... (paste below code)
  3. Click the new button
*/


(function () {
    let filename = window.prompt("Filename");
    const id = "localStorage";
    const data = window.localStorage;
   filename = `${filename}-${id}`;
  const text = JSON.stringify(data);

  const element = document.createElement("a");
  const payload = encodeURIComponent(text);

  element.setAttribute("href", "data:text/json;charset=utf-8," + payload);
  element.setAttribute("download", `${filename}.json`);
  element.style.display = "none";

  document.body.appendChild(element);
  element.click();
  document.body.removeChild(element);
}())