September 2017
Intermediate to advanced
120 pages
2h 47m
English
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Chapter 3Create a Production Build
Many applications that rely on sophisticated JavaScript components fail to live up to their potential because they load slowly. Here, you’ll learn how to spare your own creations from this fate.
Let’s look at the word counter we’ve built in the previous two chapters. We need four network requests: one to download React, one to download ReactDOM, one to download Babel, and one for the word counter itself. Loading speed is critical for user satisfaction,[8] but people can’t start using the app until the last file downloads.
As an application grows, it’s tempting to split the code across multiple files so we can navigate the project more easily as we modify things. For example, we might place the SaveManager ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.