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Switches Reddit cark mode on and off according to System Theme (if exposed by browser).
// ==UserScript==
// @name Reddit Automatic Dark Mode
// @namespace https://github.com/r0uv3n/
// @version 2024-03-02
// @description Switches Reddit cark mode on and off according to System Theme (if exposed by browser).
// @author Henry Ruben Fischer
// @match *://*.reddit.com/*
// @icon https://www.redditstatic.com/shreddit/assets/favicon/64x64.png
// @grant none
// @license MIT
// ==/UserScript==
// jshint esversion:11
(function() {
'use strict';
const getPreferredTheme = () => window?.matchMedia?.('(prefers-color-scheme:dark)')?.matches ? 'dark' : 'light';
const darkModeToggle = document.getElementsByName("darkmode-switch-name")[0];
const getRedditTheme = () => darkModeToggle.attributes["aria-checked"] ? 'dark' : 'light';
const applyPreferredTheme = () => {
if (getRedditTheme() != getPreferredTheme()) {
darkModeToggle.click();
}
}
window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change',applyPreferredTheme);
// The above event listener is probably not applied on page load, so we do that manually once. Also we need to wait a bit since reddit seems to set the theme manually after a bit.
setTimeout(applyPreferredTheme, 3000); //Two seconds will elapse and Code will execute.
})();