HTML

Linking CSS Files External stylesheets improve maintainability and performance. Copy<link rel="stylesheet" href="styles.css">HTML Using <style> Tags for Internal CSS Copy<style> body { background-color: lightblue; } </style>HTML Linking JavaScript Files Copy<script src="script.js"…

Lazy Loading Images & Iframes Lazy loading improves page speed by loading images and iframes only when needed. Lazy Loading Images Copy<img src="image.jpg" loading="lazy" alt="Lazy Loaded Image">HTML Lazy Loading Iframes…

Web Workers for Background Tasks Web Workers allow scripts to run in the background without affecting the main thread. Creating a Web Worker Copy// worker.js onmessage = function(e) { postMessage("Worker…

Geolocation API The Geolocation API allows users to share their location with websites. Getting User Location Copy<button onclick="getLocation()">Get Location</button> <p id="location"></p> <script> function getLocation() { if (navigator.geolocation) { navigator.geolocation.getCurrentPosition(showPosition); }…

Form Validation Form validation ensures that users enter correct data before submission. HTML5 Validation Attributes Copy<input type="email" required> <input type="text" pattern="[A-Za-z]{3,}" title="Enter at least 3 letters">HTML required: Makes a field…