Book Image

Hands-On JavaScript High Performance

By : Justin Scherer
1 (1)
Book Image

Hands-On JavaScript High Performance

1 (1)
By: Justin Scherer

Overview of this book

High-performance web development is all about cutting through the complexities in different layers of a web app and building services and APIs that improve the speed and performance of your apps on the browser. With emerging web technologies, building scalable websites and sustainable web apps is smoother than ever. This book starts by taking you through the web frontend, popular web development practices, and the latest version of ES and JavaScript. You'll work with Node.js and learn how to build web apps without a framework. The book consists of three hands-on examples that help you understand JavaScript applications at both the server-side and the client-side using Node.js and Svelte.js. Each chapter covers modern techniques such as DOM manipulation and V8 engine optimization to strengthen your understanding of the web. Finally, you’ll delve into advanced topics such as CI/CD and how you can harness their capabilities to speed up your web development dramatically. By the end of this web development book, you'll have understood how the JavaScript landscape has evolved, not just for the frontend but also for the backend, and be ready to use new tools and techniques to solve common web problems.
Table of Contents (15 chapters)

WebAssembly - A Brief Look into Native Code on the Web

The past few chapters have been all about how to leverage JavaScript in the modern web landscape. We have looked at frontend development, backend development, and even building and deploying applications through continuous integration and continuous deployment (CI/CD). Now, we are going to take a step back and look at two topics that can help enhance our development with native speed code.

WebAssembly is a specification for assembly for the web. Assembly is a one-to-one mapping for the language that computers understand. WebAssembly, on the other hand, is a one-to-one mapping for a virtual computer that can run these instructions. In this chapter, we will explore WebAssembly and how we can port native applications to the browser.

Overall, we will explore the following topics:

  • Understanding WebAssembly
  • Setting up our environment...