mirror of
https://github.com/sergeyyarkov/yarkov.tech.git
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24 lines
925 B
JavaScript
24 lines
925 B
JavaScript
/**
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* This script is used to determine the theme of the site.
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* The theme value is taken from localstorage, otherwise from the operating system.
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* It is very important to include this script before loading the CSS
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* and body markup to prevent FOUC (Flash of unstyled content).
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*/
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const getTheme = () => {
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const local = localStorage.getItem('theme');
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if (local && (local === 'dark' || local === 'light')) return local;
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const isDark = window.matchMedia('(prefers-color-scheme: dark)').matches;
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return isDark ? 'dark' : 'light';
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};
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window.theme = getTheme();
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document.documentElement.setAttribute('data-theme', window.theme);
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/* Sync with OS theme */
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window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', ({ matches: isDark }) => {
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window.theme = isDark ? 'dark' : 'light';
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localStorage.setItem('theme', window.theme);
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document.documentElement.setAttribute('data-theme', window.theme);
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});
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