Learn about RxJS to write efficient asynchronous code. Explore subjects, operators, and observables. Gain insights into creating projects like a reactive local database and handling DOM events.

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RxJS (Reactive Extensions for JavaScript) is a very powerful library for web development which allows you to easily write asynchronous or call-back code.

In this course, you will explore the latest version of RxJS in detail, focusing on how to apply the reactive paradigm to solve your day-to-day tasks. You will learn all the major components of this library including: subjects, operators, and how to test observables.

In the last section of this course, you will get hands-on with this library to create your own project. Throughout this project, you’ll learn about building a centralized loading indicator, how to handle DOM events, how to build a reactive local database, and more.

By the end of this course, you will have a great new skill to add to your resume, and a cool new project for your portfolio.

Building Reactive Applications with RxJS

Which of the following operators allow you to create timed Observables? (You can select multiple correct answers.)

Which of the following operators allow you to create timed Observables? (You can select multiple correct answers.)

Which operator allows you to skip the first few items that fulfill a given condition?

Which operator allows you to skip the first few items that fulfill a given condition?

Which operator is best-suited for implementing an auto-save functionality for your application?

Which operator is best-suited for implementing an auto-save functionality for your application?

Which of the following operators allow you to map an Observable to another Observable? (You can select multiple correct answers.)

Which of the following operators allow you to map an Observable to another Observable? (You can select multiple correct answers.)

Which operator is best suited to combine pairs of events flowing in the data stream?

Which operator is best suited to combine pairs of events flowing in the data stream?

An operator is a function, which is applied to an Observable and produces an Observable.

An operator is a function, which is applied to an Observable and produces a number/string.

An operator is a function, which is applied to the value flowing down the data stream and produces an Observable.

What is the main logic you should keep in mind when building custom operators?

What is the main logic you should keep in mind when building custom operators?

RxJS Operators

RxJS Operators

Check your understanding of RxJs operators by solving a quiz.

The Need for Reactive Programming

RxJS Subjects

RxJS Operators

Testing Observables

Real-World Projects in RxJS

Conclusion

Quiz Yourself on RxJS Operators