https://aymuos15.github.io/js/theme.js

1// Theme toggle with localStorage persistence
2(function initTheme() {
3  const saved = localStorage.getItem("theme-preference") || "light";
4  document.documentElement.setAttribute("data-theme", saved);
5})();
6
7document.addEventListener("DOMContentLoaded", () => {
8  const toggle = document.querySelector(".theme-toggle");
9
10  toggle.addEventListener("click", () => {
11    const current = document.documentElement.getAttribute("data-theme");
12    const next = current === "light" ? "dark" : "light";
13    document.documentElement.setAttribute("data-theme", next);
14    localStorage.setItem("theme-preference", next);
15    if (contribGraph.classList.contains("visible")) {
16      _renderCanvas();
17    }
18  });
19});