Here:

../

means:

Go up one directory.

This concept becomes very important as projects become larger.

9️⃣ Common Project Folders

As applications become more complex, you'll encounter folders such as:

src/

components/

pages/

assets/

images/

styles/

utils/

services/

Their exact purpose depends on the project and framework.

For example:

src/
├── components/
├── pages/
├── services/
├── assets/
└── styles/

We'll learn these structures when we start working with React and larger applications.

🔟 A Real-World Project

A simple website might look like:

portfolio/
│
├── index.html
├── about.html
├── contact.html
│
├── css/
│   └── style.css
│
├── js/
│   └── script.js
│
└── images/
    ├── profile.jpg
    └── project1.png

A larger modern application might eventually look more like:

my-app/
│
├── src/
│   ├── components/
│   ├── pages/
│   ├── services/
│   ├── assets/
│   └── styles/
│
├── public/
├── package.json
├── README.md
└── .gitignore

Don't worry about understanding all of these folders yet.

We'll introduce them when we actually need them.

🧠 Key Things to Remember

File → Stores information or code.

Folder → Organizes files.

index.html → Common default/main HTML document.

images/ → Can organize image files.

css/ → Can organize CSS files.

js/ → Can organize JavaScript files.

../ → Moves up one directory in a relative path.

A good project structure keeps code organized and makes applications easier to understand and maintain.

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🐙 GitHub - Version control and collaboration
🎨 Figma - UI/UX design and prototyping
📊 Google Analytics - Website traffic analysis
🌐 Netlify - Easy web hosting and deployment
🔒 Auth0 - Authentication and authorization
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🌐 Web Development Roadmap — Part 12

🏗️ HTML — What Is HTML and Why Do We Need It?

HTML is the first major technology we'll learn for building websites.

1️⃣ What Is HTML?

HTML stands for:

HyperText Markup Language

HTML is the standard markup language used to structure content on webpages.

In simple words:

HTML tells the browser what content exists on a webpage and what each piece of content represents.

For example, a webpage might contain:

• A heading

• Paragraphs

• Images

• Links

• Buttons

• Lists

• Forms

• Tables

HTML provides the structure for these elements.

2️⃣ HTML Is Not a Programming Language

This is an important distinction.

HTML is a markup language, not a programming language.

HTML describes the structure and meaning of content.

For example:

<h1>My Portfolio</h1>
<p>Welcome to my website.</p>

There is no programming logic here.

We're simply telling the browser:

"This is a main heading."

and:

"This is a paragraph."

JavaScript, on the other hand, can perform programming logic:

let age = 25;

if (age >= 18) {
    console.log("Adult");
}

So remember:

• HTML → Structure

• CSS → Appearance

• JavaScript → Behaviour and logic

3️⃣ How HTML Works

HTML uses elements to describe content.

For example:

<h1>Hello World</h1>

The browser interprets this as a heading.

Another example:

<p>Welcome to my website.</p>

The browser interprets this as a paragraph.

The browser then turns the HTML structure into the webpage you see.

4️⃣ HTML Elements

An HTML element commonly consists of:

<tag>Content</tag>

For example:

<p>Hello</p>

Here:

• <p> → Opening tag

• Hello → Content

• </p> → Closing tag

Together, they form an HTML element.

Another example:

<h1>Web Development</h1>

The entire thing is an HTML element.

5️⃣ HTML Tags

A tag is the markup used to define an element.

Examples:

• <h1>

• <p>

• <a>

• <img>

• <button>

Different tags represent different types of content.

For example:

<h1>My Website</h1>

h1 represents a heading.

<p>Hello everyone.</p>

p represents a paragraph.

<button>Login</button>

button represents a button.

6️⃣ A Simple HTML Page

A basic HTML document looks like this:

<!DOCTYPE html>
<html>
<head>
    <title>My Website</title>
</head>

<body>
    <h1>Welcome to My Website</h1>
    <p>This is my first webpage.</p>
</body>
</html>

Don't worry if you don't understand everything yet.

We'll learn each part separately.

For now, understand the overall structure.

7️⃣ <html>

The <html> element represents the root of the HTML document.

Most of your HTML page exists inside it.

<html>
    ...
</html>

Think of it as the outer container of the document.

8️⃣ <head>

The <head> contains information about the webpage that generally isn't displayed as the main page content.

For example:

<head>
    <title>My Website</title>
</head>

It can contain things such as:

• Page title

• Metadata

• Links to CSS

• Other information used by the browser

We'll explore the <head> in detail later.

9️⃣ <body>

The <body> contains the main content displayed on the webpage.

For example:

<body>
    <h1>Welcome</h1>
    <p>This is my website.</p>
</body>

The user can see this content in the browser.

A simple way to remember:

<html>
   │
   ├── <head>
   │      → Information about the page
   │
   └── <body>
          → Visible page content

🔟 <!DOCTYPE html>

You'll usually see this at the beginning of an HTML document:

<!DOCTYPE html>

It tells the browser that the document uses modern HTML standards.

It's a doctype declaration, not an ordinary HTML element.

🌐 Real-World Example

Imagine you're building a portfolio.

You might start with:

<h1>Deepak's Portfolio</h1>

<p>
    Welcome to my portfolio website.
</p>

<h2>My Projects</h2>

<p>
    Here are some of the projects I have built.
</p>

HTML provides the structure:

Portfolio
   ↓
Introduction
   ↓
Projects
   ↓
Project information

Later, CSS will make this structure visually appealing.

JavaScript can then add interactive behaviour.

🧩 HTML + CSS + JavaScript

Think about a car:

HTML → The structure

Provides the basic parts:

• Body

• Seats

• Wheels

• Dashboard

CSS → The appearance

Controls:

• Colors

• Size

• Design

• Layout

JavaScript → Behaviour

Controls things such as:

• Interactive controls

• Dynamic behaviour

• Responses to user actions

Together, they form the foundation of frontend web development.

🧠 Key Points to Remember

• HTML = HyperText Markup Language

• HTML structures webpage content.

• HTML is a markup language, not a programming language.

• HTML uses elements and tags.

• <head> contains information about the document.

• <body> contains the main visible webpage content.

• <!DOCTYPE html> declares the document type.

• HTML provides structure, CSS provides styling, and JavaScript provides behaviour.

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