src/scripts/darktheme.js


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const theme = localStorage.getItem("theme");
var isDark = false;

if (theme) {
    setTheme(theme === "dark");
} else if (window.matchMedia
    && window.matchMedia("(prefers-color-scheme: dark)").matches) {
    setTheme(true);
}

function setTheme(dark) {
    if (dark) {
        document.body.classList.add("dark-mode");
        localStorage.setItem("theme", "dark");
    } else {
        document.body.classList.remove("dark-mode");
        localStorage.setItem("theme", "light");
    }
    isDark = dark;
}

function switchTheme() {
    setTheme(!isDark);
}