53 lines
1.7 KiB
JavaScript
53 lines
1.7 KiB
JavaScript
export default class CodeExample extends HTMLElement {
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constructor() {
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super();
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this.themeToggleBtn = this.querySelector("#theme-toggle");
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this.themeToggleDarkIcon = this.themeToggleBtn.querySelector(
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"#theme-toggle-dark-icon",
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);
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this.themeToggleLightIcon = this.themeToggleBtn.querySelector(
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"#theme-toggle-light-icon",
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);
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// Change the icons inside the button based on previous settings
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if (
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localStorage.getItem("color-theme") === "dark" ||
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(!("color-theme" in localStorage) &&
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window.matchMedia("(prefers-color-scheme: dark)").matches)
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) {
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this.themeToggleLightIcon.classList.remove("hidden");
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} else {
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this.themeToggleDarkIcon.classList.remove("hidden");
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}
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this.onclick = this.toggleTheme.bind(this);
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}
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toggleTheme() {
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// toggle icons inside button
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this.themeToggleDarkIcon.classList.toggle("hidden");
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this.themeToggleLightIcon.classList.toggle("hidden");
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// if set via local storage previously
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if (localStorage.getItem("color-theme")) {
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if (localStorage.getItem("color-theme") === "light") {
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document.documentElement.classList.add("dark");
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localStorage.setItem("color-theme", "dark");
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} else {
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document.documentElement.classList.remove("dark");
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localStorage.setItem("color-theme", "light");
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}
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// if NOT set via local storage previously
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} else {
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if (document.documentElement.classList.contains("dark")) {
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document.documentElement.classList.remove("dark");
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localStorage.setItem("color-theme", "light");
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} else {
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document.documentElement.classList.add("dark");
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localStorage.setItem("color-theme", "dark");
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}
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}
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}
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}
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