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Mastering Reactive JavaScript

You're reading from   Mastering Reactive JavaScript Building asynchronous and high performing web apps with RxJS

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Product type Paperback
Published in May 2017
Publisher Packt
ISBN-13 9781786463388
Length 310 pages
Edition 1st Edition
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Author (1):
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Erich de Souza Oliveira Erich de Souza Oliveira
Author Profile Icon Erich de Souza Oliveira
Erich de Souza Oliveira
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Table of Contents (12) Chapters Close

Preface 1. What Does Being Reactive Mean? FREE CHAPTER 2. Reacting for the First Time 3. A World Full of Changes - Reactive Extensions to the Rescue 4. Transforming Data - Map, Filter, and Reduce 5. The World Changes Too Fast - Operators to Deal with Backpressure 6. Too Many Sources - Combining Observables 7. Something is Wrong - Testing and Dealing with Errors 8. More about Operators 9. Composition 10. A Real-Time Server 11. A Real-Time Client

Composition

In the last chapter, we reviewed some of the key concepts from functional reactive programming using RxJS, including:

  • Which events an observable propagates
  • What are observables?
  • Review of some important operators:
    • Differences between the map() and flatMap() operators
    • A challenge to emulate an operator from another
    • Filter data
    • Aggregate data
  • Tests for an RxJS program
  • Mitigating the problem of backpressure
  • Combining observables

Paying attention to this review is crucial to have a better and clearer understanding of functional reactive programming, and with this knowledge we are more prepared for more advanced topics, such as some operators from the last chapter:

  • flatMapLatest()
  • flatMapFirst()
  • finally()
  • groupBy()
  • do()

In this chapter, we will learn a final topic before we move on to our final project. Using all the knowledge from this book, we already learned how we can combine observables...

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