Free Theme Switcher for Etch Builder

A production-ready dark/light mode toggle built in Etch Visual Development Environment

We’re releasing a complete, production-ready theme switching component built directly in Etch. This showcases the clean, semantic code that Etch generates while providing all the functionality you need for dark/light mode switching.

What You Get

This theme switcher demonstrates the power of building with Etch:

Clean, minimal code with maximum functionality
Full keyboard navigation, screen reader support, and proper focus management
System preference detection (respects OS dark mode)
Persistent user preferences with localStorage
Zero dependencies – pure vanilla JavaScript
Etch-generated markup with proper data attributes
AutomaticCSS ready
Public API for programmatic control

The Complete Code

JSON

{"type":"block","gutenbergBlock":{"blockName":"core/group","attrs":{"metadata":{"etchData":{"origin":"etch","name":"Theme Switcher","script":{"code":"'use strict';

/**
 * Etchberg Theme Switcher
 * Handles light/dark theme switching with support for AutomaticCSS and browser standard color schemes
 * Includes special handling for iframe contexts (Etch editor integration)
 */

/**
 * Detects if AutomaticCSS system is present on the page
 * Checks for CSS custom properties, class prefixes, and stylesheet links
 * @returns {boolean} True if AutomaticCSS is detected
 */
function hasACSSSystem() {
    const style = getComputedStyle(document.documentElement);
    return style.getPropertyValue('--base-0') !== '' || 
           document.querySelector('[class*="acss-"]') !== null ||
           document.querySelector('link[href*="automatic"]') !== null;
}

// Initialize system detection and theme switcher element
const useACSSSystem = hasACSSSystem();
const themeSwitcher = document.querySelector('.etb-theme-switch');
const isDarkTheme = (theme) => theme === 'dark';

/**
 * Determines the initial theme based on saved preference or system preference
 * Priority: localStorage -> system preference -> default to light
 * @returns {string} 'light' or 'dark'
 */
function getInitialTheme() {
    const savedTheme = localStorage.getItem('etb-theme');
    if (savedTheme === 'light' || savedTheme === 'dark') {
        return savedTheme;
    }
    return window.matchMedia?.('(prefers-color-scheme: dark)')?.matches ? 'dark' : 'light';
}

/**
 * Applies the specified theme to the document
 * @param {string} theme - 'light' or 'dark'
 */
function applyTheme(theme) {
    const isDark = isDarkTheme(theme);
    const isInIframe = window.self !== window.top; // Check if we're inside an iframe (Etch editor)
    const etchHtml = document.documentElement; // HTML element of the iframe
    const etchBody = document.body; // Canvas where we place elements
  
    // Special handling for iframe context (Etch editor integration)
    if (isInIframe && etchBody) {
        etchHtml.style.backgroundColor = 'white'; // Keep HTML background white
        
        /*
         * Apply theme colors to the body (canvas)
         */
        etchBody.style.backgroundColor = isDark ? '#000000' : '#ffffff';
        etchBody.style.color = isDark ? '#ffffff' : '#000000';
    }
  
    // Apply theme based on detected system
    if (useACSSSystem) {
        // AutomaticCSS uses a class-based color scheme system
        document.documentElement.classList.toggle('color-scheme--alt', isDark);
    } else {
        // Browser standard color scheme implementation
        document.documentElement.style.colorScheme = theme;
        document.documentElement.dataset.theme = theme;
    }

    // Update theme switcher button appearance and accessibility
    if (themeSwitcher) {
        themeSwitcher.setAttribute('aria-pressed', isDark.toString());
        
        // Toggle icon visibility based on current theme
        const moonIcon = themeSwitcher.querySelector('.etb-theme-switch--icon:first-child');
        const sunIcon = themeSwitcher.querySelector('.etb-theme-switch--icon:last-child');
        
        if (moonIcon && sunIcon) {
            // Show moon icon in dark mode, sun icon in light mode
            moonIcon.style.setProperty('display', isDark ? 'flex' : 'none', 'important');
            sunIcon.style.setProperty('display', isDark ? 'none' : 'flex', 'important');
        }
    }
}

/**
 * Gets the currently active theme
 * @returns {string} 'light' or 'dark'
 */
function getCurrentTheme() {
    if (useACSSSystem) {
        return document.documentElement.classList.contains('color-scheme--alt') ? 'dark' : 'light';
    } else {
        return document.documentElement.style.colorScheme === 'dark' ? 'dark' : 'light';
    }
}

/**
 * Toggles between light and dark themes
 * Saves the new preference and dispatches a custom event
 */
function toggleTheme() {
    const currentTheme = getCurrentTheme();
    const newTheme = currentTheme === 'dark' ? 'light' : 'dark';
    applyTheme(newTheme);
    localStorage.setItem('etb-theme', newTheme);

    // Dispatch custom event for other components to listen to theme changes
    window.dispatchEvent(new CustomEvent('etb-theme-changed', { 
        detail: { theme: newTheme, system: useACSSSystem ? 'acss' : 'browser' } 
    }));
}

/**
 * Adds click and keyboard event listeners to the theme switcher button
 * Supports both mouse clicks and keyboard activation (Enter/Space)
 */
function addThemeSwitchListeners() {
    if (!themeSwitcher) return;

    // Handle mouse clicks
    themeSwitcher.addEventListener('click', function(e) {
        e.preventDefault();
        toggleTheme();
    });

    // Handle keyboard activation for accessibility
    themeSwitcher.addEventListener('keydown', function(e) {
        if (e.key === 'Enter' || e.key === ' ') {
            e.preventDefault();
            toggleTheme();
        }
    });
}

/**
 * Initializes the Etchberg theme switching system
 * Sets up event listeners, system preference detection, and initial theme
 */
function initETBThemeSwitch() {
    // Set up theme switcher button listeners
    addThemeSwitchListeners();

    // Listen for system color scheme changes
    if (window.matchMedia) {
        window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', function(e) {
            // Only apply system preference if user hasn't set a manual preference
            if (!localStorage.getItem('etb-theme')) {
                applyTheme(e.matches ? 'dark' : 'light');
            }
        });
    }

    // Apply initial theme and save preference
    const initialTheme = getInitialTheme();
    applyTheme(initialTheme);
    localStorage.setItem('etb-theme', initialTheme);

    // Expose public API for external use
    window.etbThemeSwitch = {
        /**
         * Get the currently active theme
         * @returns {string} 'light' or 'dark'
         */
        getCurrentTheme,
        
        /**
         * Set a specific theme
         * @param {string} theme - 'light' or 'dark'
         * @returns {boolean} True if theme was set successfully
         */
        setTheme: (theme) => {
            if (theme === 'dark' || theme === 'light') {
                applyTheme(theme);
                localStorage.setItem('etb-theme', theme);
                return true;
            }
            return false;
        },
        
        /**
         * Toggle between light and dark themes
         */
        toggleTheme,
        
        /**
         * Reset theme to system preference
         * Removes saved preference and applies system default
         */
        reset: () => {
            localStorage.removeItem('etb-theme');
            const systemTheme = window.matchMedia?.('(prefers-color-scheme: dark)')?.matches ? 'dark' : 'light';
            applyTheme(systemTheme);
        },
        
        /**
         * Get information about the color scheme system being used
         * @returns {string} 'AutomaticCSS' or 'Browser Standard'
         */
        getSystem: () => useACSSSystem ? 'AutomaticCSS' : 'Browser Standard'
    };
}

// Initialize the theme switching system when script loads
initETBThemeSwitch();","id":"gr6bt9j"},"styles":["kvocs00","pqisfrq","etch-global-variable-style"],"attributes":{"aria-label":"Toggle between light and dark mode","aria-pressed":"false","class":"etb-theme-switch header__button"},"block":{"type":"html","tag":"button"}},"name":"Theme Switcher"}},"innerBlocks":[{"blockName":"core/group","attrs":{"metadata":{"etchData":{"origin":"etch","name":"Icon","styles":["5d7xp4j","wwb63nb","etch-global-variable-style"],"attributes":{"style":"display: none !important;","class":"etb-theme-switch--icon header__div"},"block":{"type":"html","tag":"div"}},"name":"Icon"}},"innerBlocks":[{"blockName":"core/group","attrs":{"metadata":{"etchData":{"origin":"etch","name":"Moon","styles":["0z59e0s","etch-global-variable-style"],"attributes":{"viewBox":"0 0 24 24","width":"24","height":"24","color":"currentColor","fill":"none","class":"header__svg"},"block":{"type":"html","tag":"svg"}},"name":"Moon"}},"innerBlocks":[{"blockName":"core/group","attrs":{"metadata":{"etchData":{"origin":"etch","styles":["fwu9gap","etch-global-variable-style"],"attributes":{"d":"M21.5 14.078A8.557 8.557 0 0 1 9.922 2.5C5.668 3.497 2.5 7.315 2.5 11.873a9.627 9.627 0 0 0 9.627 9.627c4.558 0 8.376-3.168 9.373-7.422Z","stroke":"white","stroke-width":"1.5","stroke-linecap":"round","stroke-linejoin":"round","class":"header__path"},"block":{"type":"html","tag":"path"}}}},"innerBlocks":[],"innerHTML":"<div class=\"wp-block-group\"></div>","innerContent":["<div class=\"wp-block-group\">","</div>"]}],"innerHTML":"<div class=\"wp-block-group\"></div>","innerContent":["<div class=\"wp-block-group\">",null,"</div>"]}],"innerHTML":"<div class=\"wp-block-group\"></div>","innerContent":["<div class=\"wp-block-group\">",null,"</div>"]},{"blockName":"core/group","attrs":{"metadata":{"etchData":{"origin":"etch","name":"Icon","styles":["5d7xp4j","wwb63nb","etch-global-variable-style"],"attributes":{"style":"display: flex !important;","class":"etb-theme-switch--icon header__div"},"block":{"type":"html","tag":"div"}},"name":"Icon"}},"innerBlocks":[{"blockName":"core/group","attrs":{"metadata":{"etchData":{"origin":"etch","name":"Sun","styles":["0z59e0s","etch-global-variable-style"],"attributes":{"viewBox":"0 0 24 24","width":"24","height":"24","color":"currentColor","fill":"currentColor","class":"header__svg"},"block":{"type":"html","tag":"svg"}},"name":"Sun"}},"innerBlocks":[{"blockName":"core/group","attrs":{"metadata":{"etchData":{"origin":"etch","styles":["fwu9gap","etch-global-variable-style"],"attributes":{"style":"color: transparent","d":"M17 12a5 5 0 1 1-10 0 5 5 0 0 1 10 0Z","stroke":"black","stroke-width":"1.5","class":"header__path"},"block":{"type":"html","tag":"path"}}}},"innerBlocks":[],"innerHTML":"<div class=\"wp-block-group\"></div>","innerContent":["<div class=\"wp-block-group\">","</div>"]},{"blockName":"core/group","attrs":{"metadata":{"etchData":{"origin":"etch","styles":["fwu9gap","etch-global-variable-style"],"attributes":{"d":"M12 2v1.5m0 17V22m7.07-2.929-1.06-1.06M5.99 5.989 4.928 4.93M22 12h-1.5m-17 0H2m17.071-7.071-1.06 1.06M5.99 18.011l-1.06 1.06","stroke":"black","stroke-width":"1.5","stroke-linecap":"round","class":"header__path"},"block":{"type":"html","tag":"path"}}}},"innerBlocks":[],"innerHTML":"<div class=\"wp-block-group\"></div>","innerContent":["<div class=\"wp-block-group\">","</div>"]}],"innerHTML":"<div class=\"wp-block-group\"></div>","innerContent":["<div class=\"wp-block-group\">",null,null,"</div>"]}],"innerHTML":"<div class=\"wp-block-group\"></div>","innerContent":["<div class=\"wp-block-group\">",null,"</div>"]}],"innerHTML":"<div class=\"wp-block-group\"></div>","innerContent":["<div class=\"wp-block-group\">",null,null,"</div>"]},"styles":{"kvocs00":{"type":"class","selector":".etb-theme-switch","collection":"default","css":"width: 24px;\n height: 24px;\n min-width: max-content;\n cursor: pointer;\n padding: 0;\n border-radius: 50%;\n\n // Icon container\n &--icon {\n display: flex;\n align-items: center;\n justify-content: center;\n position: relative;\n }","readonly":false},"pqisfrq":{"type":"class","selector":".header__button","collection":"default","css":"","readonly":false},"5d7xp4j":{"type":"class","selector":".etb-theme-switch--icon","collection":"default","css":"","readonly":false},"wwb63nb":{"type":"class","selector":".header__div","collection":"default","css":"","readonly":false},"0z59e0s":{"type":"class","selector":".header__svg","collection":"default","css":"","readonly":false},"fwu9gap":{"type":"class","selector":".header__path","collection":"default","css":"","readonly":false}}}

^{Code improved thanks to @hakira}

Basic Implementation

Just copy the JSON and paste it inside Etch —it works out of the box in any Etch website with or without AutomaticCSS.

Customizing Icons: To change the sun/moon icons, simply replace the SVG elements in the HTML. Make sure your new SVGs use currentColor or set a fixed color.

Important: If using AutomaticCSS, make sure “Alternate Color” is turned on in all your active colors.

If you want to learn more about how to properly set up your dark mode colors, follow this guide: Practical tips for dark mode in AutomaticCSS

Perfect for Professional Projects

This component demonstrates why Etch is perfect for professional WordPress development:

Minimal, clean code that doesn’t bloat your project
Maximum flexibility to style according to your design system
Professional functionality with accessibility and UX built-in
Easy integration with any CSS framework or design system

Browser Support

Works in all modern browsers:

Chrome 88+
Firefox 85+
Safari 14+
Edge 88+

More Professional Components Coming

This theme switcher is part of our growing library of Etch-built components that prioritize clean code and professional functionality.

Explore Etchberg → – Professional resources for WordPress developers who value quality code.