f0ckv2/public/s/js/theme.js

(() => {
  const themes = [ 'f0ck', 'p1nk', 'orange', 'amoled' ];
  const acttheme = localStorage.getItem('theme') ?? "f0ck";
  document.documentElement.setAttribute("theme", acttheme);
  if(themecontainer = document.querySelector("#themes")) {
    const sb = document.createElement("select");
    sb.id = "themeselector";
    themes.forEach(o => {
      const option = document.createElement("option");
      option.text = o;
      if(acttheme === o)
        option.selected = true;
      sb.add(option);
    });
    themecontainer.insertAdjacentElement("afterend", sb);
    sb.addEventListener("change", e => {
      const s = e.target.options[e.target.selectedIndex].innerText;
      document.documentElement.setAttribute("theme", s);
      localStorage.setItem("theme", s);
    });
  }
})();