Course Content
Module 1: Introduction to Web Development
Module 1 Summary – Introduction to Web Development In this module, you learned the basics of web development and how the internet works. You understood the difference between frontend, backend, and full stack development and explored the client–server model that powers websites. You also set up your development environment with browser and VS Code, and created a simple project folder structure. Finally, you discovered the roles of HTML, CSS, and JavaScript in building a website — HTML gives the structure, CSS adds design and style, JavaScript makes it interactive. By completing this module, you now have the foundation to start coding websites.
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Lesson 1.1: What is Web Development?
Lesson 1.2: Client-Server Model & How Websites Work
Lesson 1.3: Tools Setup – Browser, VS Code, Live Server Extension
Lesson 1.4: Basics of HTML, CSS, JS & Their Role
Practice Questions – Module 1
Module 2: HTML – Building the Structure
In this module, students will learn the foundation of web development — HTML (HyperText Markup Language). HTML is used to create the basic structure of any website. You will understand how to write clean and semantic HTML code, work with elements like headings, paragraphs, links, images, lists, tables, and forms, and use attributes to make your content more meaningful. By the end of this module, you will be able to create the skeleton of a webpage and prepare it for styling and interactivity.
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Lesson 2.1: Introduction to HTML & Basic Document Structure
Lesson 2.2: Headings, Paragraphs, Links, Images
Lesson 2.3: Lists (Ordered & Unordered)
Lesson 2.4: Tables – Rows, Columns, Attributes
Lesson 2.5: Forms – Input, Textarea, Select, Buttons
Lesson 2.6: Semantic HTML (header, footer, nav, section, article)
Lesson 2.7: Multimedia – Audio, Video, Iframe
Lesson 2.8: Best Practices in HTML
Practice Questions – HTML
Module 3: CSS – Styling the Web
In this module, students learned how to style and design web pages using CSS. Key topics included: Introduction to CSS and syntax Inline, internal, and external CSS Colors, backgrounds, borders, and fonts CSS Box Model (margin, border, padding, content) Text styling and Google Fonts CSS positioning (relative, absolute, fixed, sticky) Flexbox (one-dimensional layouts) CSS Grid (two-dimensional layouts) Pseudo-classes and pseudo-elements CSS transitions, animations, and transformations Responsive Web Design and media queries By the end of this module, students can create visually appealing, interactive, and responsive web pages using CSS.
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Lesson 3.1: Introduction to CSS & Syntax
Lesson 3.2: Inline, Internal & External CSS
Lesson 3.3: Colors, Backgrounds, Borders, Fonts
Lesson 3.4: CSS Box Model (Margin, Border, Padding, Content)
Lesson 3.5: Text Styling & Google Fonts
Lesson 3.6: CSS Positioning (Relative, Absolute, Fixed, Sticky)
Lesson 3.7: Flexbox – One-Dimensional Layouts
Lesson 3.8: CSS Grid – Two-Dimensional Layouts
Lesson 3.9: Pseudo-classes & Pseudo-elements
Lesson 3.10: CSS Transitions, Animations & Transformations
Lesson 3.11: Responsive Web Design & Media Queries
Module 3 Practice Questions
Module 4: JavaScript – Making Websites Interactive
In this module, students will learn how to make web pages interactive using JavaScript (JS). JavaScript allows developers to respond to user actions, manipulate HTML content, validate forms, and create dynamic effects. Key topics include: Introduction to JavaScript & Its Role in Web Development Variables, Data Types, and Operators Conditional Statements and Loops Functions – Declaration, Expression, and Arrow Functions DOM (Document Object Model) Manipulation Event Handling – Click, Mouse, Keyboard, etc. Forms Validation using JavaScript Arrays, Objects, and JSON ES6 Features – let, const, template literals, arrow functions, destructuring Introduction to JavaScript Projects & Practice Exercises Outcome: By the end of this module, students will be able to add interactivity, validate input, and dynamically modify webpage content using JavaScript.
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Lesson 4.1: Introduction to JavaScript & How It Runs in Browser
Lesson 4.2: Variables, Data Types & Operators
Lesson 4.3: Functions & Scope
Lesson 4.4: Arrays & Objects
Lesson 4.5: Conditional Statements & Loops
Lesson 4.6: DOM (Document Object Model) Basics
Lesson 4.7: Selecting & Manipulating Elements
Lesson 4.8: Event Handling (click, hover, input, etc.)
Lesson 4.9: Forms Validation with JavaScript
Lesson 4.10: JavaScript ES6 Features (let, const, arrow functions, template literals, etc.)
Lesson 4.11: LocalStorage & SessionStorage
Lesson 4.12: Introduction to JSON
Module 4: Practice Questions
Module 5: Advanced JavaScript Concepts
This module covers advanced JavaScript topics that prepare students for real-world web development. It focuses on asynchronous programming, APIs, ES6+ features, and modern coding techniques. Key Topics: Asynchronous JavaScript – Callbacks, Promises, async/await APIs & Fetch – Get data from external sources JavaScript Classes & Objects – Object-oriented programming Error Handling – Try…catch, throwing errors Modules & Import/Export – Organize code efficiently Advanced ES6+ Features – Destructuring, spread/rest, template literals, arrow functions, optional chaining Learning Outcome: Students will write clean, modular, and asynchronous code. Ability to consume APIs and handle data dynamically. Strong foundation for modern JavaScript frameworks like React, Vue, or Angular.
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Lesson 5.1: Asynchronous JavaScript – Callbacks, Promises, async/await
Lesson 5.2: APIs & Fetch – Getting Data from External Sources
Lesson 5.3: JavaScript Classes & Objects – Object-Oriented Programming
Lesson 5.4: Error Handling – Try…Catch, Throwing Errors
Lesson 5.5: Modules & Import/Export – Organizing Code
Lesson 5.6: Advanced ES6+ Features – Destructuring, Spread/Rest, Optional Chaining
Module 5: Practice Questions – Advanced JavaScript Concepts
Module 6: HTML+CSS+JS Project (Mini Project)
In this module, students will apply all their learning from HTML, CSS, and JavaScript by creating a mini project. This hands-on experience helps students understand real-world web development, integrate multiple concepts, and gain confidence in building interactive web pages. Key Highlights: Design a complete webpage with HTML structure. Style the page using CSS (colors, layout, fonts, responsive design). Add interactivity with JavaScript (DOM manipulation, event handling, form validation). Practice project planning, coding, and debugging. Prepare students for real-world web development tasks.
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Lesson 6.1: HTML & CSS Only Projects
Lesson 6.2: JavaScript Projects
Module 7: Final Project
In this module, students will apply all skills learned in HTML, CSS, and JavaScript to build a complete, responsive, and interactive website. Focus is on real-world project development, including planning, coding, styling, and interactivity. Students will design layouts, create semantic HTML structure, style with CSS, and add dynamic features using JavaScript. Example projects: Personal Portfolio Website Restaurant Website Small Business Website The module emphasizes hands-on experience, responsiveness, user experience, and project evaluation using a self-assessment checklist. ✅ Outcome: By the end of this module, students will have a fully functional website demonstrating their ability to develop real-world web projects independently.
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Lesson 7.1: Planning & Designing the Website
Lesson 7.2: Building HTML Structure & Styling with CSS
Lesson 7.3: Adding JavaScript Interactivity & Final Touches
Lesson 7.4: Final Project – Self-Evaluation Checklist
Module 8: Deployment & Next Steps
This module guides students on how to deploy websites online, understand version control, and plan their career path in web development. Learn to host websites on platforms like GitHub Pages and Netlify. Introduction to Git & GitHub for version control and collaborative projects. Explore career opportunities in web development: Frontend, Backend, and Full Stack roles. Understand next steps: advanced frameworks like React, Angular, and backend basics for growth. ✅ Outcome: By the end of this module, students will be able to deploy their projects online, manage code versions efficiently, and plan their next learning steps in web development.
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Lesson 8.1: Hosting Websites on GitHub Pages / Netlify
Lesson 8.2: Introduction to Version Control (Git & GitHub Basics)
Lesson 8.3: Career Path in Web Development (Frontend → Full Stack)
Lesson 8.4: Roadmap After HTML, CSS, JS (Frameworks: React, Angular, Backend Basics)
Web Development – Practice Questions
This topic contains practice questions from all modules of the “Web Development with HTML, CSS, JavaScript” course. Students can solve these questions to reinforce their learning, test their skills, and prepare for the final project and assessment. The questions cover HTML structure, CSS styling, JavaScript interactivity, mini projects, final project assessment, and deployment basics.
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Practice Questions – Complete Course
Web Development – Final MCQ Test
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Web Development – Final MCQ Test
Web Development with HTML, CSS, JavaScript

Lesson 4.6: DOM (Document Object Model) Basics

The Document Object Model (DOM) is a programmatic representation of a web page that allows JavaScript to access, modify, and manipulate HTML elements. Essentially, the DOM turns every element, attribute, and text in a webpage into objects that can be controlled via JS.

1. What is DOM?

  • DOM is a tree-like structure representing the HTML document.

  • Each HTML element is a node in the tree.

  • JavaScript can read or modify nodes dynamically.

Example HTML:

 
<!DOCTYPE html>
<html>
<body>
<h1 id="heading">Hello World</h1>
<p class="para">Welcome to JavaScript.</p>
</body>
</html>

DOM Representation:

 
document
└─ html
└─ body
├─ h1#heading
└─ p.para

2. Accessing the DOM

JavaScript provides multiple ways to select elements:

a) By ID

 
let heading = document.getElementById("heading");
console.log(heading.textContent); // Output: Hello World

b) By Class Name

 
let para = document.getElementsByClassName("para");
console.log(para[0].textContent); // Output: Welcome to JavaScript.

c) By Tag Name

 
let paragraphs = document.getElementsByTagName("p");
console.log(paragraphs[0].textContent);

d) Query Selector

  • Selects first match:

 
let heading = document.querySelector("#heading");

  • Selects all matches:

 
let paras = document.querySelectorAll(".para");

3. Why DOM is Important

  • Allows dynamic content updates (change text, add/remove elements).

  • Handles user interactions (clicks, input, hover).

  • Forms the foundation for modern front-end frameworks like React, Angular, and Vue.

✅ Summary:

  • DOM = representation of HTML as objects.

  • Every element is a node that JS can access and manipulate.

  • Use getElementById, getElementsByClassName, getElementsByTagName, querySelector, querySelectorAll to select elements.

  • DOM manipulation enables interactive and dynamic web pages.

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