JavaScript Promises

Master JavaScript's ubiquitous asynchronous tool - the promise, and maximize your ability to code and troublshoot them!

4.50 (22 reviews)
Udemy
platform
English
language
Web Development
category
instructor
1,366
students
1.5 hours
content
May 2021
last update
FREE
regular price

What you will learn

What promises are

How and where to use promises

JavaScript code required to implement and consume promises

Understanding of the promise library ecosystem

Promise methods catch and then

How to implement the Promise spec

How to troubleshoot promises

How to chain and combine promises

How to use promises with async / await

Description

We all visit dozens of websites every single day, but did you realize that virtually all e-commerce websites and social networks implement Promises, JavaScript’s built in tool for handling actions that communicate with other networks?

In this course, JavaScript promises, you’ll learn all about these highly efficient tools for making websites efficiently and easily do commonly needed tasks such as

  • Logging users in and out

  • Fulfilling orders

  • Saving payment details

  • Sending instant messages

If you can understand why the above tasks are critical for any eCommerce application, you can easily see how learning promises, which are used to do all these things, is valuable!

We’ve tried to pack as much information on Promises into one short course. We really took out everything except what you absolutely need to know!

Here’s a small fraction of what you’ll learn:

  • What promises are

  • How and where to use promises

  • JavaScript code required to implement and consume promises

  • Understanding of the promise library ecosystem

  • Promise methods catch and then

  • How to implement the Promise spec

  • How to troubleshoot promises

  • How to chain and combine promises

  • How to use promises with async / await

So, why hesitate? Sign up for this course today! And in less than 24 hours, you can be a more efficient and skilled web developer. Improve your promise skills to unlock these advantages in your career:

· More esteem from team leads and coworkers, stemming from ability to confidently discuss promises and make recommendations

· More time to focus on interesting tasks such as adding new features (or whatever you find interesting!) and less time spent troubleshooting and debugging

· Skills needed to independently create your own APIs, eCommerce platforms and libraries

Take this course and start your journey towards mastery of asynchronous JavaScript development!

Content

JavaScript Promises

What’s the point of this course? / Roadmap

Understanding Promises

Understanding Promises
Why do promises exist?
The Untenable Inconsistency of Promises

Using Promises

Why use promises? / The Promise Specification / Standard Promise Usage
Demo: Standard Promise Usage
Returning Promises
Demo: Implementing the Promise Spec
Async/Await and Promises
Demo: Async/Await and Promises

Multiple Promises

About Multiple Promises / Chaining Promises
Demo: Chaining Promises
Promise Utilities
Demo: Promise Utilities race, any and all

Handling Errors with Promises

What happens when an error happens inside a promise?
Demo: Handling Errors with Promises
Course Summary
Quiz: Mastering Promises

Screenshots

JavaScript Promises - Screenshot_01JavaScript Promises - Screenshot_02JavaScript Promises - Screenshot_03JavaScript Promises - Screenshot_04

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Related Topics

4012738
udemy ID
4/28/2021
course created date
5/6/2021
course indexed date
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course submited by