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Hands-On JavaScript High Performance

You're reading from   Hands-On JavaScript High Performance Build faster web apps using Node.js, Svelte.js, and WebAssembly

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Product type Paperback
Published in Feb 2020
Publisher Packt
ISBN-13 9781838821098
Length 376 pages
Edition 1st Edition
Languages
Tools
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Author (1):
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Justin Scherer Justin Scherer
Author Profile Icon Justin Scherer
Justin Scherer
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Table of Contents (15) Chapters Close

Preface 1. Tools for High Performance on the Web 2. Immutability versus Mutability - The Balance between Safety and Speed FREE CHAPTER 3. Vanilla Land - Looking at the Modern Web 4. Practical Example - A Look at Svelte and Being Vanilla 5. Switching Contexts - No DOM, Different Vanilla 6. Message Passing - Learning about the Different Types 7. Streams - Understanding Streams and Non-Blocking I/O 8. Data Formats - Looking at Different Data Types Other Than JSON 9. Practical Example - Building a Static Server 10. Workers - Learning about Dedicated and Shared Workers 11. Service Workers - Caching and Making Things Faster 12. Building and Deploying a Full Web Application 13. WebAssembly - A Brief Look into Native Code on the Web 14. Other Books You May Enjoy

Working with the DOM

The Document Object Model (DOM) has not always been the easiest technology to work with. We had old archaic APIs and, most of the time, they never lined up between browsers. But, within the last couple of years, we have gotten some nice APIs to do the following: grab elements with ease, build in-memory hierarchies for fast attachment, and templates with DOM shadowing. All of these have led to a rich environment for making changes to the underlying nodes and creating a number of rich frontends without the need for libraries such as jQuery. In the following sections, we will see how working with these new APIs has helped us.

Query selector

Before we had this API (or we were trying to be as cross-browser...

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