Learn how a frontend web framework works by coding your own!

Web developers use frontend frameworks every day—but do you know how these essential parts of your stack really work? Build a Frontend Web Framework (From Scratch) reveals the inner workings of web frameworks by helping you create your very own.

In Build a Frontend Web Framework (From Scratch), you’ll learn the secrets behind frameworks like React, Vue, and Angular, including:

• Create HTML documents programmatically
• Define the view with virtual DOM
• Update the HTML efficiently with reconciliation algorithms
• Create two-way communication mechanisms between components in a hierarchy

Whatever your experience level, you’ll be able to start building your framework with this guide. All you need is some core skills in HTML, CSS, and JavaScript. And once you’ve learned how frameworks function, you’ll be able to work with them more efficiently, troubleshoot bugs more effectively, and even customize them for your specific needs!

About the technology

You use frontend frameworks every day, but do you really know what’s going on behind the API? Building your own framework is a great way to learn how they interact with the DOM, generate page views, route data between components, and communicate with the underlying operating system. With this interesting and entertaining book, you’ll build your own web framework step-by-step in JavaScript, ready to share with the world as an NPM package!

About the book

Build a Frontend Web Framework (From Scratch) guides you through a simple component-based frontend framework that borrows from React, Svelte, Angular, and other familiar tools. You’ll learn how a modern framework operates by adding features like component state and lifecycle management, a virtual DOM, and reconciliation algorithms to update the HTML efficiently. You’ll appreciate how each critical concept is broken down into easy-to-digest chunks and explained with engaging graphics.

What's inside

• Create HTML documents programmatically
• Define the view with the virtual DOM
• Implement a component lifecycle scheduler

Table of Contents

• PART 1

1 Are frontend frameworks magic to you?

2 Vanilla JavaScript—like in the old days

• PART 2

3 Rendering and the virtual DOM

4 Mounting and destroying the virtual DOM

5 State management and the application’s lifecycle

6 Publishing and using your framework’s first version

7 The reconciliation algorithm: Diffing virtual trees

8 The reconciliation algorithm: Patching the DOM

• PART 3

9 Stateful components

10 Component methods

11 Subcomponents: Communication via props and events

12 Keyed lists

13 The component lifecycle hooks and the scheduler

14 Testing asynchronous components

Appendix

About the Reader

For web developers familiar with JavaScript and Node.

About the Author

Angel Sola Orbaiceta has worked in the software industry for over a decade, creating software for the cloud, macOS, and Windows desktop applications.