Next.jsReactSSRSSGISRFramework

Introduction to Next.js - The React Framework for Production

Next.js has revolutionized React development by providing a powerful, production-ready framework that combines developer experience with cutting-edge performance features. In this comprehensive guide, we'll explore what makes Next.js the go-to choice for building modern web applications.

What is Next.js?

Next.js is a React framework developed by Vercel that enables functionality such as server-side rendering, static site generation, and API routes out of the box. It's designed to help developers build high-performance web applications with the best developer experience.

Key Features at a Glance:

Server-Side Rendering (SSR)
Static Site Generation (SSG)
Incremental Static Regeneration (ISR)
API Routes

typescript
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// pages/static.js - Static Site Generation (SSG)
export async function getStaticProps() {
const data = await fetchData()
return {
props: { data },
revalidate: 60 // ISR: Revalidate every 60 seconds
}
}

// pages/server.js - Server-Side Rendering (SSR)
export async function getServerSideProps() {
const data = await fetchData()
return {
props: { data }
}
}

typescript
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// pages/blog/[slug].js
import Head from 'next/head'

export default function BlogPost({ post }) {
return (
<>
<Head>
<title>{post.title}</title>
<meta name="description" content={post.excerpt} />
<meta property="og:title" content={post.title} />
</Head>
<article>{/* Post content */}</article>
</>
)
}

typescript
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// pages/index.js - Home page
export default function Home() {
return <h1>Welcome to my site!</h1>
}

// pages/blog/index.js - Blog listing
export default function Blog() {
return <h1>Blog Posts</h1>
}

// pages/blog/[slug].js - Dynamic blog post pages
export default function Post({ slug }) {
return <h1>Post: {slug}</h1>
}

typescript
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Would you like to use TypeScript? No / Yes
Would you like to use ESLint? No / Yes
Would you like to use Tailwind CSS? No / Yes
Would you like to use `src/` directory? No / Yes
Would you like to use App Router? No / Yes
Would you like to customize the default import alias? No / Yes

typescript
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my-next-app/
├── app/                 # App Router directory
│   ├── layout.js        # Root layout
│   └── page.js          # Home page
├── components/          # React components
├── public/             # Static files
├── styles/             # CSS files
├── next.config.js      # Next.js configuration
└── package.json        # Project dependencies

typescript
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// Client-side data fetching
import useSWR from 'swr'

function Profile() {
const { data, error } = useSWR('/api/user', fetcher)

if (error) return <div>Failed to load</div>
if (!data) return <div>Loading...</div>
return <div>Hello {data.name}!</div>
}

// Server-side data fetching
async function getData() {
const res = await fetch('https://api.example.com/data')
if (!res.ok) throw new Error('Failed to fetch data')
return res.json()
}

export default async function Page() {
const data = await getData()

return <main>{/* Use data */}</main>
}

typescript
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// app/loading.js
export default function Loading() {
return <div>Loading...</div>
}

// app/error.js
'use client'

export default function Error({
error,
reset,
}) {
return (
<div>
<h2>Something went wrong!</h2>
<button onClick={reset}>Try again</button>
</div>
)
}

typescript
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// app/layout.js
export const metadata = {
title: {
template: '%s | My Website',
default: 'My Website',
},
description: 'Welcome to my website',
openGraph: {
title: 'My Website',
description: 'Welcome to my website',
url: 'https://mywebsite.com',
siteName: 'My Website',
images: [
{
url: 'https://mywebsite.com/og.jpg',
},
],
locale: 'en_US',
type: 'website',
},
}

Introduction to Next.js - The React Framework for Production

What is Next.js?

Key Features at a Glance:

Introduction to Next.js - The React Framework for Production

What is Next.js?

Key Features at a Glance:

Why Choose Next.js?

1. Enhanced Performance

2. Improved SEO

3. Developer Experience

Getting Started with Next.js

Installation and Setup

Project Structure

Advanced Features and Patterns

1. Data Fetching Patterns

2. API Routes

3. Image Optimization

Performance Optimization Techniques

1. Route Segment Config

2. Loading and Error States

3. Metadata API

Deployment and Production Considerations

1. Environment Variables

2. Production Build

3. Deployment Platforms

Best Practices and Tips

Tools and Resources

Conclusion

Next Steps