JavaScript Promises
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JavaScript Promises handle asynchronous operations efficiently, representing future completion or failure. They simplify chaining, improve readability, manage errors gracefully, and support modern workflows through async/await for reliable, responsive development everywhere.
JavaScript Promises
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1 Year Access 
Level 2
67 Students -
2 days, 12 hours
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Overview
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
Certificate of Achievement
Endorsed Certificate of Achievement from the Quality Licence Scheme
After successfully completing the course, learners will be able to order an endorsed certificate as proof of their new achievement. Endorsed certificates can be ordered and get delivered to your home by post for only £69.00. There is an additional £10 postage charge for international students.
CPD Certification from One Education
After successfully completing the assessment of this course, you will qualify for the CPD Certificate from One Education as proof of your continued expert development. Certificate is available in PDF format, at the cost of £9, or a hard copy can be sent to you via post, at the cost of £15.
Endorsement
This course has been endorsed by the Quality Licence Scheme for its high-quality, non-regulated provision and training programmes. This course is not regulated by Ofqual and is not an acknowledged lesson. One Education will be able to advise you on any further recognition, for example, progression routes into further and/or higher education. For further information, please visit the Learner FAQs on the Quality Licence Scheme website.
Method of Assessment
To assess your learning, you have to complete the assignment questions provided at the end of the course. You have to score at least 60% to pass the exam and to qualify for Quality Licence Scheme endorsed, and CPD acknowledged certificates.
After submitting the assignment, our expert tutor will assess your assignment and will give you feedback on your performance.
After passing the assignment exam, you will be able to apply for a certificate.
Why Study This Course
It doesn’t matter if you are an aspiring expert or absolute beginner; this course will enhance your expertise and boost your CV with critical skills and an acknowledged certificate attesting to your knowledge.
The JavaScript Promises is fully available to anyone, and no previous lessons 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 | |||
| Assignment -JavaScript Promises | 2 days, 11 hours | ||
| Order Your Certificate | |||
| Order Your Certificate QLS | 00:00:00 | ||
