Asynchronous JavaScript: Promises, Callbacks, Async Await

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Viktor Pyskunov

4:00:33

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1 - Introduction

1 - Introduction.mp4

01:44

2 - Structure of This Course.mp4

02:54

2 - Difference Between Synchronous And Asynchronous Actions

3 - What Is Asynchronicity.mp4

03:12

4 - Typical Example of an Asynchronous Action in JavaScript.mp4

05:14

5 - Synchronous vs Asynchronous in JavaScript.mp4

06:28

6 - Quick Note about Github Repository.html

7 - Event Loop in JavaScript Call Stack and Task Queue.mp4

06:30

8 - Lets Fix Our Example.mp4

01:59

3 - Callbacks In JavaScript

9 - What Is a Callback In JavaScript.mp4

02:52

10 - Callbacks Are Not Always Asynchronous.mp4

02:50

11 - How To Handle Errors In Asynchronous Code.mp4

07:57

12 - Pros & Cons Of Callbacks.mp4

01:28

13 - Callback Examples In JavaScript Libraries.mp4

01:35

14 - Callbacks Lack Readability.mp4

06:35

15 - Making HTTP Requests From Your Browser.html

16 - Callback Hell.mp4

05:52

4 - Testing Asynchronous Callbacks

17 - Setting Up Testing Environment.mp4

04:25

18 - Testing Callback Functions With Mocha And Chai.mp4

10:10

5 - Promise In JavaScript

19 - What Is a Promise In JavaScript.mp4

03:03

20 - How To Create A New Promise.mp4

03:17

21 - Final States Of The Promise.mp4

02:35

22 - How To Use JavaScript Promises Then Method.mp4

05:13

23 - Rewriting calculateSquare Function Using Promises.mp4

05:49

24 - How To Promisify Any JS Function.mp4

06:38

25 - Chaining Promises.mp4

06:37

26 - Making HTTP Requests Using Fetch API.mp4

05:34

27 - How To Avoid Callback Hell.mp4

03:45

28 - Handling Promise Rejections.mp4

06:39

29 - Promiseresolve And Promisereject.mp4

04:46

30 - Executing Promises In Parallel Promiseall.mp4

05:12

31 - How Promiseall Handles Rejections.mp4

03:57

32 - Promiseall Implementing From Scratch.mp4

09:45

33 - Executing Promises In Parallel PromiseallSettled.mp4

06:52

34 - PromiseallSettled Implementing From Scratch.mp4

09:14

35 - Which Promise Is Faster Promiserace.mp4

06:26

36 - Getting First Successful Promise Promiseany.mp4

06:49

37 - Promiserace Implementing From Scratch.mp4

09:07

38 - Promiseany Implementing From Scratch.mp4

11:40

6 - Testing Promises In JavaScript

39 - Setting Up Testing Environment.mp4

04:47

40 - Testing JavaScript Promises Using Mocha And Chai.mp4

09:11

41 - Timeouts In Mocha.mp4

03:16

42 - Making Multiple Promise Assertions In One Test.mp4

06:41

7 - Async Await in JavaScript

43 - Async Functions in JavaScript.mp4

03:31

44 - Await Keyword in JavaScript.mp4

03:29

45 - Using Async Await with Fetch API.mp4

02:46

46 - Top Level Await.mp4

04:45

47 - Handling Errors Using Async Await.mp4

02:30

48 - Sequential vs Parallel Execution.mp4

03:56

8 - Summary

49 - Summary.mp4

00:58

50 - Bonus Lecture Other Courses with Discounts.html

Description

Become an expert in Asynchronous JavaScript: Promises, Callbacks, Async Await, Event Loop, etc.

What You'll Learn?

Learn fundamental concepts of Asynchronous JavaScript
Everything you need to know about JavaScript Promises
Using callbacks: Pros and Cons, when to use and how to test
Async / Await - the new way of handling asynchronous operations in JavaScript
In-depth understanding of the Event Loop
Learn how JavaScript Engine executes code behind the scenes
Unit Testing of asynchronous functions
No fluff, direct and to the point
Github repository

Who is this for?

Developers with basic JavaScript knowledge

Those who want to master Asynchronous JavaScript, Callbacks, Promises, Async Await

More details

Description
My main goal is to help you master Asynchronous JavaScript. This course was specifically designed for those who want to improve their skills in Callbacks, Promises, Async Await, and Event Loop. This course was designed to be easy to understand, and therefore there are a lot of visuals in it, especially when we are talking about important concepts. You will also see a lot of coding examples along the way.
We will be talking about 3 main components of Async JavaScript: Callback functions, Promises, and Async Await.
Callbacks in JavaScript are used everywhere. Creating event handlers, making HTTP requests, interacting with the DOM, setting timeouts, reading or writing data to the filesystem, working with databases, etc. IÂ am pretty sure you are already using callbacks in your code, but IÂ am not sure if you know how they actually work... Knowing how things really work will help you write your code faster and avoid weird bugs.
Promises were created as a better alternative to callbacks. They don't have drawbacks that callbacks have. JavaScript promises are incredibly helpful when you have several asynchronous operations that depend on each other. However, promises are a new concept which you have to learn, and this course will help you with that.
Async Await is a syntactic sugar around Promises introduced in EcmaScript 8. Before that writing asynchronous code in JavaScript was very different from writing ordinary synchronous code. Async await allows you to structure all your code in a similar way, no matter if it's synchronous or asynchronous.
There is a lot of asynchronous stuff going on in popular JavaScript libraries and frameworks: React, Angular, Vue.js, jQuery, etc. In NodeJS it's almost impossible to write anything without using asynchronous operations.Â After watching this course you will be able to read and write asynchronous JavaScript code effectively, and you will definitely understand how it works behind the scenes!
P. S. Made in Ukraine
Who this course is for:
Developers with basic JavaScript knowledge
Those who want to master Asynchronous JavaScript, Callbacks, Promises, Async Await

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JavaScript

Viktor Pyskunov

Instructor's Courses

My name is Viktor and my goal is to help you understand stuff.I am a Senior Software Developer from Ukraine specializing in JavaScript and various technologies around it.I have been creating web applications for 15 years.During these years I acquired a lot of expertise in Software Development industry.Now I want to share my knowledge with you.I design my courses so they are easy to understand and to follow, and I update them regularly in order to keep them up-to-date.

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