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48 lines
1.3 KiB
JavaScript
48 lines
1.3 KiB
JavaScript
function getTheme() {
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if (localStorage && localStorage.getItem("theme")) {
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// User preference
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return localStorage.getItem("theme");
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}
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if (window.matchMedia) {
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// OS preference
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return window.matchMedia("(prefers-color-scheme: light)").matches
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? "light"
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: "dark";
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}
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// Undefined
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}
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function setTheme(theme) {
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// Main theme
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document.documentElement.setAttribute("data-theme", theme);
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// Prism theme
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const prismDark = document.getElementById("prism-dark");
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const prismLight = document.getElementById("prism-light");
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prismDark.toggleAttribute("disabled", theme === "light");
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prismLight.toggleAttribute("disabled", theme === "dark");
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// Store user preference
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localStorage.setItem("theme", theme);
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}
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// Initial load
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const theme = getTheme();
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if (theme) setTheme(theme);
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function toggleTheme(e) {
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const theme = e.currentTarget.classList.contains("light--hidden")
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? "light"
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: "dark";
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setTheme(theme);
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}
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// This script is inlined in the <head> of the document, so we have to wait
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// for the DOM content before can add event listeners to the toggle buttons
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document.addEventListener("DOMContentLoaded", function () {
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const toggleButtons = document.querySelectorAll(".theme__toggle");
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toggleButtons.forEach((btn) => {
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btn.addEventListener("click", toggleTheme);
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});
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});
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