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You may be wondering how to make websites perform the basic tasks efficiently. Learn about the promises of JavaScript and explore how to use them to handle asynchronous operations and make websites work well.

This super-exclusive JavaScript Promises course guides you in every possible way to provide you with a secure understanding of JavaScript promises and how they work. It will take you through the untenable inconsistency of promises, returning promises, multiple promises and promise utilities.  Armed with the proper knowledge and skills from our unique training system, you will be able to implement the promise spec, chain and combine promises and handle errors that occur inside promises.

Course design

The course is delivered through our online learning platform, accessible through any internet-connected device. There are no formal deadlines or teaching schedules, meaning you are free to study the course at your own pace.

You are taught through a combination of

  • Video lessons
  • Online study materials

Will I receive a certificate of completion?

Upon successful completion, you will qualify for the UK and internationally-recognised CPD accredited certification. You can choose to make your achievement formal by obtaining your PDF Certificate at the cost of £9 and Hard Copy Certificate for £15.

Why study this course

It doesn’t matter if you are an aspiring professional or absolute beginner; this course will enhance your expertise and boost your CV with critical skills and an accredited certification attesting to your knowledge.

The JavaScript Promises is fully available to anyone, and no previous qualifications are needed to enrol. All One Education needs to know is that you are eager to learn and are over 16.

Course Curriculum

Section 01: JavaScript Promises
What’s the point of this course? 00:03:00
Section 02: Understanding Promises
Understanding Promises 00:03:00
Why do promises exist? 00:03:00
The Untenable Inconsistency of Promises 00:05:00
Section 03: Using Promises
Why use promises? / The Promise Specification / Standard Promise Usage 00:04:00
Demo: Standard Promise Usage 00:07:00
Returning Promises 00:05:00
Demo: Implementing the Promise Spec 00:10:00
Async/Await and Promises 00:01:00
Demo: Async/Await and Promises 00:04:00
Section 04: Multiple Promises
About Multiple Promises / Chaining Promises 00:03:00
Demo: Chaining Promises 00:04:00
Promise Utilities 00:04:00
Demo: Promise Utilities race, any and all 00:08:00
Section 05: Handling Errors with Promises
What happens when an error happens inside a promise? 00:03:00
Demo: Handling Errors with Promises 00:08:00
Course Summary 00:02:00
Assignment -JavaScript Promises 00:00:00
  • £425.00 £25.00 ex Vat
  • 1 year
  • Number of Units18
  • Number of Quizzes0
  • 1 hour, 17 minutes


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