March 2024
Intermediate to advanced
308 pages
6h 9m
English
Content preview from JavaScript Design Patterns
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9
Maximizing Performance – Lazy Loading and Code Splitting
In order to maximize the performance of a JavaScript application, reducing the amount of unused JavaScript being loaded and interpreted is key. The techniques that can be brought to bear on this problem are called lazy loading and code splitting. Lazy loading and code splitting allows parts of the JavaScript to be loaded on demand as required. This is in contrast to being downloaded on page load and can greatly reduce the amount of unused JavaScript being loaded and interpreted.
We’ll cover the following topics in this chapter:
- The dynamic import syntax and how Vite can automatically code-split based on the syntax
- Route-based code splitting with Next.js and how to read the Bundle
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.