Asynchronous JavaScript: Promises, Callbacks, Async Await

Course Curriculum

Chapter 1: Introduction

Lecture 1: Introduction

Lecture 2: Structure of This Course

Chapter 2: Difference Between Synchronous And Asynchronous Actions

Lecture 1: What Is Asynchronicity?

Lecture 2: Typical Example of an Asynchronous Action in JavaScript

Lecture 3: Synchronous vs Asynchronous in JavaScript

Lecture 4: Quick Note about Github Repository

Lecture 5: Event Loop in JavaScript. Call Stack and Task Queue

Lecture 6: Let's Fix Our Example

Chapter 3: Callbacks In JavaScript

Lecture 1: What Is a Callback In JavaScript?

Lecture 2: Callbacks Are Not Always Asynchronous

Lecture 3: How To Handle Errors In Asynchronous Code

Lecture 4: Pros & Cons Of Callbacks

Lecture 5: Callback Examples In JavaScript Libraries

Lecture 6: Callbacks Lack Readability

Lecture 7: Making HTTP Requests From Your Browser

Lecture 8: Callback Hell

Chapter 4: Testing Asynchronous Callbacks

Lecture 1: Setting Up Testing Environment

Lecture 2: Testing Callback Functions With Mocha And Chai

Chapter 5: Promises In JavaScript

Lecture 1: What Is a Promise In JavaScript

Lecture 2: How To Create A Promise

Lecture 3: Final States Of The Promise

Lecture 4: How To Consume JavaScript Promises: Promise.then

Lecture 5: Rewriting Our Function Using Promises

Lecture 6: How To Promisify any JavaScript Function

Lecture 7: Chaining Promises

Lecture 8: Making HTTP Requests Using Fetch API

Lecture 9: How To Avoid Callback Hell

Lecture 10: Handling Promise Rejections

Lecture 11: Promise.resolve and Promise.reject

Lecture 12: Executing Promises In Parallel: Promise.all

Lecture 13: How Promise.all Handles Rejections

Lecture 14: Promise.all: Implementing From Scratch

Lecture 15: Executing Promises In Parallel: Promise.allSettled

Lecture 16: Promise.allSettled: Implementing From Scratch

Lecture 17: Which Promise Is Faster? Promise.race

Lecture 18: Getting First Successful Promise: Promise.any

Lecture 19: Promise.race: Implementing From Scratch

Lecture 20: Promise.any: Implementing From Scratch

Chapter 6: Testing Promises In JavaScript

Lecture 1: Setting Up Testing Environment

Lecture 2: Testing JavaScript Promises Using Mocha And Chai

Lecture 3: Timeouts In Mocha

Lecture 4: Making Multiple Promise Assertions In One Test

Chapter 7: Async Await in JavaScript

Lecture 1: Async Functions in JavaScript

Lecture 2: Await Keyword in JavaScript

Lecture 3: Using Async Await with Fetch API

Lecture 4: Top Level Await

Lecture 5: Handling Errors Using Async Await

Lecture 6: Sequential vs Parallel Execution

Chapter 8: Advanced Version of Event Loop

Lecture 1: What About Task Priorities?

Lecture 2: A Closer Look at the Task Queue

Lecture 3: Handling Long Tasks in JavaScript. Part 1

Lecture 4: Handling Long Tasks in JavaScript. Part 2

Lecture 5: Microtasks

Lecture 6: Debugging Our Initial Example

Lecture 7: Animations

Lecture 8: Creating Animations Using requestAnimationFrame

Lecture 9: Quick Recap of Event Loop in the Browser

Chapter 9: Summary

Lecture 1: Summary

Lecture 2: Bonus Lecture: Other Courses with Discounts