french-journey/theme.js
2026-07-10 18:17:02 +03:00

26 lines
906 B
JavaScript

(function () {
const KEY = "frenchJourney.theme";
const root = document.documentElement;
function apply(theme) {
root.dataset.theme = theme;
localStorage.setItem(KEY, theme);
const button = document.querySelector("[data-theme-toggle]");
if (button) {
const dark = theme === "dark";
button.textContent = dark ? "Light" : "Dark";
button.setAttribute("aria-pressed", String(dark));
}
}
const saved = localStorage.getItem(KEY);
const preferred = window.matchMedia && window.matchMedia("(prefers-color-scheme: dark)").matches ? "dark" : "light";
apply(saved || preferred);
window.addEventListener("DOMContentLoaded", () => {
const button = document.querySelector("[data-theme-toggle]");
if (!button) return;
button.onclick = () => apply(root.dataset.theme === "dark" ? "light" : "dark");
apply(root.dataset.theme || "light");
});
})();