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ECMAScript Cookbook

You're reading from   ECMAScript Cookbook Over 70 recipes to help you learn the new ECMAScript (ES6/ES8) features and solve common JavaScript problems

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Product type Paperback
Published in Mar 2018
Publisher Packt
ISBN-13 9781788628174
Length 348 pages
Edition 1st Edition
Languages
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Author (1):
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Ross Harrison Ross Harrison
Author Profile Icon Ross Harrison
Ross Harrison
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Table of Contents (14) Chapters Close

Preface 1. Building with Modules FREE CHAPTER 2. Staying Compatible with Legacy Browsers 3. Working with Promises 4. Working with async/await and Functions 5. Web Workers, Shared Memory, and Atomics 6. Plain Objects 7. Creating Classes 8. Inheritance and Composition 9. Larger Structures with Design Patterns 10. Working with Arrays 11. Working with Maps and Symbols 12. Working with Sets 13. Other Books You May Enjoy

Combining arrays with the spread operator

We have seen how to use some new syntax to extract elements from an array. Not to be left out, there are also some new facilities for combining arrays. Helpfully, as we'll see, the use of the spread operator mirrors that of the rest operator.

In this recipe, we'll take a look at how to use the spread operator to combine arrays.

Getting ready

This recipe assumes that you already have a workspace that allows you to create and run ES modules in your browser. If you don't, refer to the first two chapters.

How to do it...

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