Next.js to Next.js with TypeScript Course

A comprehensive guide from beginner to advanced, all on one page.

Section 1: The Foundations - From Zero to Next.js

Getting Started: Installation & Setup

Before we dive into coding, let's get your development environment ready.

**Install Node.js:** Next.js requires Node.js. Download and install the **LTS** version from the official Node.js website. You can verify the installation by running `node -v` and `npm -v` in your terminal.
**Create a Next.js App:** Open your terminal in VS Code (`Ctrl + \`` or `Terminal &agt; New Terminal`). Navigate to your desired project directory and run the following command. The command-line tool will guide you through the setup process.
```
npx create-next-app@latest
```
**Run the Development Server:** Navigate into your new project directory and start the local development server.
```
cd my-next-app
npm run dev
```
**View Your App:** Open your web browser and go to `http://localhost:3000`. You'll see the default Next.js starter page.

Module 1: File-System Routing

Next.js uses a file-system based router. Any `.js`, `.jsx`, `.ts`, or `.tsx` file under the `app` directory becomes a route.

// app/about/page.tsx
export default function AboutPage() {
  return &lt;h1&gt;About Us&lt;/h1&gt;;
}

The code above automatically creates a route at `http://localhost:3000/about`.

Module 2: Data Fetching

Next.js offers powerful data fetching methods to optimize performance. Here's a quick look at `getServerSideProps` using **Axios**.

// pages/ssr-example.js
import axios from 'axios';

export async function getServerSideProps(context) {
  const response = await axios.get('https://api.example.com/data');
  const data = response.data;
  return { props: { data } };
}

export default function SSRPage({ data }) {
  // data is available here on the server
  return &lt;pre&gt;{JSON.stringify(data, null, 2)}&lt;/pre&gt;;
}