Part 3:Performance and Security Patterns

In this part, we will deep dive into performance and security patterns in JavaScript. You will learn how to optimize your asynchronous and event-driven JavaScript code for performance and security-sensitive contexts. In addition, you will learn about and implement asset-level optimizations, including lazy-loading and code-splitting JavaScript in a Next.js application, how to prioritize asset loading, and executing JavaScript off the main thread with Next.js and Partytown.

This part has the following chapters:

• Chapter 7, Asynchronous Programming Performance Patterns
• Chapter 8, Event-Driven Programming Patterns
• Chapter 9, Maximizing Performance – Lazy Loading and Code Splitting
• Chapter 10, Asset Loading Strategies and Executing Code off the Main Thread