Book Image

Next.js Quick Start Guide

By : Kirill Konshin
Book Image

Next.js Quick Start Guide

By: Kirill Konshin

Overview of this book

Next.js is a powerful addition to the ever-growing and dynamic JavaScript world. Built on top of React, Webpack, and Babel, it is a minimalistic framework for server-rendered universal JavaScript applications. This book will show you the best practices for building sites using Next. js, enabling you to build SEO-friendly and superfast websites. This book will guide you from building a simple single page app to a scalable and reliable client-server infrastructure. You will explore code sharing between client and server, universal modules, and server-side rendering. The book will take you through the core Next.js concepts that everyone is talking about – hot reloading, code splitting, routing, server rendering, transpilation, CSS isolation, and more. You will learn ways of implementing them in order to create your own universal JavaScript application. You will walk through the building and deployment stages of your applications with the JSON API,customizing the confguration, error handling,data fetching, deploying to production, and authentication.
Table of Contents (9 chapters)

Dynamic Component Loading (aka Lazy Components)

Even though Next.js can split your app into route-based asynchronously loaded chunks, it is always a good idea to split further if it is needed. The less unnecessary code the user loads up front, the better.

The technique is very simple and completely supported by Next.js:

import dynamic from 'next/dynamic';

And then, anywhere on demand, we can do the loading:

import dynamic from 'next/dynamic'

const FooDynamic = dynamic(import('../components/Foo'))

export default class Page extends React.Component {

state = {show: false};

show = () => this.setState({show: true});

render() {
return ( ? <FooDynamic/> : <button onClick={}>Show!</button>


Here, the component will not be loaded until it is actually placed on the page (that is, rendered...