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Professional JavaScript

You're reading from   Professional JavaScript Fast-track your web development career using the powerful features of advanced JavaScript

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Product type Paperback
Published in Sep 2019
Publisher
ISBN-13 9781838820213
Length 664 pages
Edition 1st Edition
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Authors (4):
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Hugo Di Francesco Hugo Di Francesco
Author Profile Icon Hugo Di Francesco
Hugo Di Francesco
Siyuan Gao Siyuan Gao
Author Profile Icon Siyuan Gao
Siyuan Gao
Vinicius Isola Vinicius Isola
Author Profile Icon Vinicius Isola
Vinicius Isola
Philip Kirkbride Philip Kirkbride
Author Profile Icon Philip Kirkbride
Philip Kirkbride
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Table of Contents (12) Chapters Close

Preface 1. JavaScript, HTML, and the DOM FREE CHAPTER 2. Node.js and npm 3. Node.js APIs and Web Scraping 4. RESTful APIs with Node.js 5. Modular JavaScript 6. Code Quality 7. Advanced JavaScript 8. Asynchronous Programming 9. Event-Driven Programming and Built-In Modules 10. Functional Programming with JavaScript Appendix

Language Features Supported in ES5, ES6, ES7, ES8, and ES9

Before we dive into the depths of these amazing language features, let's take a look at the different versions of JavaScript. Currently, most websites that you regularly come across that still support legacy browsers use ES5. As of 2019, many mainstream browsers have already added support for ES6. Later versions will only have minimal browser support. Since we will be running and testing our code in a Node.js runtime, we don't have to worry about version compatibility as long as we are using the latest LTS (long term support) version of Node.js. Regarding the materials that will be used in this chapter, here is a breakdown of the minimum ES version your runtime needs to support:

Figure 7.1: Minimum required ES version

In this chapter, we won't be switching runtimes, but in the future, it is best to check the language support on the runtime you are going to be developing for before getting...

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