<!-- JS explanation and asynchronous nature --> <div> <h3>⚙️ JavaScript Engine & Asynchronous Patterns</h3> <p>JavaScript is single-threaded but uses event loop to handle async tasks. Promises, <code>async/await</code> and callbacks enable non-blocking I/O — critical for API calls, timers, and user interactions.</p> <div class="code-block"> // Fetch example (modern)<br> async function fetchData() <br> const res = await fetch('https://api.github.com');<br> const data = await res.json();<br> console.log(data);<br> <br> fetchData(); </div> </div>
.pdf-btn background: #3b82f6; border: none; color: white; padding: 8px 24px; border-radius: 40px; font-weight: 600; cursor: pointer; font-size: 0.9rem; transition: 0.2s; box-shadow: 0 1px 3px rgba(0,0,0,0.2); html and css and javascript pdf
<!-- Ecosystem mention --> <div style="margin-top: 2rem;"> <h3>🌐 Modern Ecosystem Snapshot</h3> <p>Frameworks & Libraries: React, Vue, Angular (component-based UIs). CSS frameworks: Tailwind, Bootstrap. Build tools: Vite, Webpack. TypeScript adds type safety to JS.</p> </div> Build tools: Vite, Webpack
// ensure that for any dynamic changes that might happen before print we preserve stability // also handle any additional layout issues (optional) const style = document.createElement('style'); style.textContent = `@media print .interactive-btn -webkit-print-color-adjust: exact; print-color-adjust: exact; .code-block pre white-space: pre-wrap; `; document.head.appendChild(style); )(); </script> Build tools: Vite
<script> document.getElementById('greetBtn').onclick = () => let name = document.getElementById('nameInput').value ; </script></pre> </div> <p>✅ This snippet combines DOM structure, modern styling, and event-driven JavaScript to create a personalized UI component.</p> </div>
// --- PDF Generation / Print functionality (cross-browser) --- const savePdfBtn = document.getElementById('saveAsPdfBtn'); const printBtn = document.getElementById('optimizePrintBtn');