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28 lines
995 B
JavaScript
28 lines
995 B
JavaScript
const themeSwitcher = document.querySelector('.theme-switcher input');
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const currentTheme = localStorage.getItem('theme');
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// detect the user's preferred color scheme and activate it
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if (currentTheme) {
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document.documentElement.setAttribute( 'data-theme', currentTheme);
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themeSwitcher.checked = currentTheme === 'dark';
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} else {
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const isSystemDark = window.matchMedia('(prefers-color-scheme: dark)').matches;
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document.documentElement.setAttribute( 'data-theme', isSystemDark? 'dark' : 'light');
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themeSwitcher.checked = isSystemDark;
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}
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// switch between themes
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function switchTheme(e) {
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if (e.target.checked) {
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document.documentElement.setAttribute('data-theme', 'dark');
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localStorage.setItem('theme', 'dark');
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}
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else {
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document.documentElement.setAttribute('data-theme', 'light');
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localStorage.setItem('theme', 'light');
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}
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}
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// event listener on checkbox change
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themeSwitcher.addEventListener('change', switchTheme, false);
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