Dynamic Theme Switching

1. Introduction

Dynamic theme switching allows users to change the visual appearance of an application in real-time. This is often achieved through the use of design tokens and theming systems which help maintain a consistent design language.

2. Key Concepts

3. Implementation

3.1 Setting Up Design Tokens

Define your design tokens in a format that is easily accessible, such as JSON or CSS variables. For example:

        {
            "light": {
                "color": {
                    "background": "#ffffff",
                    "text": "#000000"
                }
            },
            "dark": {
                "color": {
                    "background": "#000000",
                    "text": "#ffffff"
                }
            }
        }
        

3.2 Applying Themes Dynamically

Use CSS variables to apply themes dynamically. For example:

        :root {
            --background-color: #ffffff;
            --text-color: #000000;
        }

        .dark-theme {
            --background-color: #000000;
            --text-color: #ffffff;
        }

        body {
            background-color: var(--background-color);
            color: var(--text-color);
        }
        

3.3 JavaScript for Theme Switching

Implement a simple JavaScript function to toggle themes:

        function toggleTheme() {
            document.body.classList.toggle('dark-theme');
        }
        

4. Best Practices

• Ensure accessibility is maintained across themes.
• Test themes across different devices and browsers.
• Store user preferences in localStorage for persistence.
• Use meaningful names for design tokens for easy understanding.

5. FAQ