9a1f5db45c
As long as the visitor has not changed the default theme, the site will change between dark and light themes matching the OS setting.
32 lines
948 B
JavaScript
32 lines
948 B
JavaScript
const themeSwitcher = document.querySelector('.theme-switcher input');
|
|
let currentTheme = localStorage.getItem('theme');
|
|
let userHasManuallyChangedTheme = currentTheme !== null;
|
|
|
|
function setTheme(theme) {
|
|
document.documentElement.setAttribute('data-theme', theme);
|
|
themeSwitcher.checked = theme === 'dark';
|
|
localStorage.setItem('theme', theme);
|
|
currentTheme = theme;
|
|
}
|
|
|
|
if (currentTheme) {
|
|
setTheme(currentTheme);
|
|
} else {
|
|
const isSystemDark = window.matchMedia('(prefers-color-scheme: dark)').matches;
|
|
setTheme(isSystemDark ? 'dark' : 'light');
|
|
}
|
|
|
|
function switchTheme(e) {
|
|
const newTheme = e.target.checked ? 'dark' : 'light';
|
|
setTheme(newTheme);
|
|
userHasManuallyChangedTheme = true;
|
|
}
|
|
|
|
themeSwitcher.addEventListener('change', switchTheme, false);
|
|
|
|
window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', (e) => {
|
|
if (!userHasManuallyChangedTheme) {
|
|
setTheme(e.matches ? 'dark' : 'light');
|
|
}
|
|
});
|