Html Css Javascript Crash Course Review
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Theme Switcher | Crash Course</title> <link rel="stylesheet" href="style.css"> </head> <body> <div class="container"> <h1>🎨 HTML + CSS + JS Crash Course</h1> <p>Click the button to switch between light and dark themes.</p> <button id="themeBtn">🌙 Dark Mode</button> <div class="demo-box"> <p>This box changes style with the theme!</p> </div> </div> <script src="script.js"></script> </body> </html> CSS handles colors, fonts, spacing, and responsiveness.
🎯 Goal Build a dynamic "Theme Switcher" page that changes colors when you click a button. 1. HTML (Structure) HTML defines the content and layout. html css javascript crash course
// script.js const button = document.getElementById('themeBtn'); const body = document.body; // Check localStorage for saved preference const savedTheme = localStorage.getItem('theme'); if (savedTheme === 'dark') body.classList.add('dark'); button.textContent = '☀️ Light Mode'; HTML (Structure) HTML defines the content and layout
body font-family: 'Segoe UI', system-ui, sans-serif; background: var(--bg); color: var(--text); margin: 0; padding: 2rem; transition: all 0.3s ease; const body = document.body
.container max-width: 600px; margin: 0 auto; text-align: center;
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