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Introduction to creating websites and web applications using core technologies like HTML, CSS, and JavaScript.

Building the Web: Web Development (HTML, CSS, JS)

Web Development (HTML, CSS, JS) introduces creating websites and web applications using core technologies like HTML, CSS, and JavaScript, forming the backbone of modern web design. It examines how HTML structures content, CSS styles it, and JavaScript adds interactivity, empowering beginners to craft functional and visually appealing web experiences.

Components of Web Development (HTML, CSS, JS)

This section breaks down the core technologies and their roles in web development:

  • HTML (Structure): Defines the layout and content of a webpage, using tags to organize elements.
  • CSS (Styling): Controls the visual appearance of a webpage, such as colors, fonts, and layouts.
  • JavaScript (Interactivity): Adds dynamic features, enabling user interactions and real-time updates.
  • Integration of Technologies: How HTML, CSS, and JavaScript work together to create cohesive web experiences.

Examples of Web Development (HTML, CSS, JS)

HTML (Structure) Examples

  • An HTML tag <h1>Welcome to My Site</h1> creates a main heading, structuring the page’s title.
  • Using <div class="container"> in HTML groups content, like a section of text, for styling or scripting.
  • An HTML form, <form><input type="text" name="username"></form>, collects user input, such as a username.

CSS (Styling) Examples

  • CSS code h1 { color: blue; } styles the heading to be blue, enhancing visual appeal.
  • Using div.container { width: 80%; margin: auto; } in CSS centers a container and sets its width for a clean layout.
  • A CSS hover effect, button:hover { background-color: green; }, changes a button’s color when the mouse hovers over it.

JavaScript (Interactivity) Examples

  • A JavaScript function, function toggleMenu() { menu.style.display = menu.style.display === "none" ? "block" : "none"; }, toggles a menu’s visibility on click.
  • Using JavaScript, fetch("https://api.example.com/data").then(res => res.json()).then(data => console.log(data));, retrieves API data, enabling dynamic content updates.

Integration of Technologies Examples

  • An HTML <button id="btn">Click Me</button> is styled with CSS button { padding: 10px; } and made interactive with JavaScript to alert a message on click.
  • A webpage uses HTML to structure a photo gallery, CSS to create a grid layout, and JavaScript to add a click-to-zoom feature.
  • A form built with HTML <input type="email">, styled with CSS input { border: 1px solid gray; }, uses JavaScript to validate the email format before submission.