Overview What You Will Learn Curriculum Instructor

Course Overview

Asynchronous programming is a crucial concept in JavaScript that enables developers to manage operations that take time to complete—like network requests or file reading—without freezing the entire application. Unlike synchronous code that executes line by line and can block further actions, asynchronous programming allows JavaScript to remain responsive, even when handling time-consuming tasks. Understanding this concept is essential for building efficient, scalable, and user-friendly web applications.

This course begins with a foundational explanation of how asynchronous code execution works in JavaScript, delving into key concepts like the event loop, call stacks, and Web APIs. It then introduces callback functions, exploring their use in asynchronous actions such as setTimeout and event listeners, before addressing challenges like callback hell and error handling. Next, the course transitions to Promises, covering their syntax, chaining, and error handling in-depth, followed by a look at "promisification" and a practical mini project. Finally, learners dive into async/await, learning how to resolve multiple promises, handle errors, and apply the technique in real-world scenarios through another hands-on project.

By the end of this course, you'll confidently write clean, efficient, and error-resilient asynchronous JavaScript using callbacks, promises, and async/await.

What You Will Learn

  • By the end of this course, you’ll have a thorough understanding of how Asynchronous programming works in JavaScript.
  • You'll learn the ins and outs of one of the major topics that can land you a job or a promotion
  • You’ll know how to apply those concepts in your projects and create clean code that runs faster than your peers
  • You'll learn all about event loops and how JavaScript works behind the screen and how it executes Asynchronous code
  • You'll learn about callbacks and how you've probably been using them in your daily programming already
  • You'll learn about the pros and cons of callbacks, callback hell and why we need a replacement
  • You'll learn about promises, an ES6 update, and how they replaced callbacks
  • You'll learn about handling errors in promises
  • You'll learn about making promises prettier with Async Await, an ES7 update
  • You'll learn about handling errors in async await
  • You'll learn how to apply what you learn in 3 real world mini projects
  • You'll learn one of the most complex topics of programming with easy-to-understand examples and hands-on explanations

Program Curriculum

  • What are Callback Functions and What Do They Do?
  • How Asynchronous Code Execution Works - Multi-threading in JavaScript?
  • Event Loops, Call Stacks and Web APIs
  • $7 Million Cybersecurity Scholarship by EC-Council
  • Chapter 1 Quiz

  • What are Callback Functions and What Do They Do?
  • Callbacks in setTimeout and Event Listeners - Asynchronous Actions
  • Callbacks within Callbacks
  • Handling Errors in Callbacks
  • Callback Hell
  • Synchronous Callback
  • Mini Project #1 - Question
  • Mini Project #1 - Solution
  • Chapter 2 Quiz

  • Promises - What Do They Do?
  • Creating and Using Promises in Your Asynchronous Code
  • then(), .catch(), and .finally()
  • Promise Chains
  • Error Handling in Promises - In Detail
  • Promisification
  • Mini Project #2
  • Chapter 3 Quiz

  • Async Await - A Detailed Look
  • Error Handling in Async Await
  • Error Handling in Async Await
  • Mini Project #3
  • Chapter 4 Quiz
Load more modules

Instructor

Aarthi Elumalai

Aarthi Elumalai is a programmer, educator, entrepreneur, and innovator. She has a Bachelor of Engineering degree in Computer Science from Anna University, Chennai. Since then, she has managed a team of programmers and worked with 100s of clients. She is also launched a dozen web apps, plugins and software that are being used by thousands of customers online. She has over 15 years of experience in programming. She started coding in Basics at the age of 12, but her love for programming took root when she came across C programming at the age of 15. Her courses are well-received by the masses, and she has a student base of over 100,000 students from all over the world. Her courses and books always come with hands-on training in creating real-world projects using the knowledge learned so her students get better equipped for the real world.

Join over 1 Million professionals from the most renowned Companies in the world!

certificate

Choose the Pro Plan That Fits Your Learning Journey

Invest in your future with flexible Pro subscription plans. Whether you're starting your cybersecurity journey or expanding your expertise, choose the membership duration that works for you and gain access to our complete learning platform.

Monthly Plans
Annual Plans
Save 20% with our annual plans!

Pro

Ideal for continuous learning, offering extensive resources with 900+ courses and diverse Learning Paths to enhance your skills.

$ 599.00
Billed annually or $69.00 billed monthly
Get Started Now
Start your 7-day trial for $1

What is included

  • Access to 900+ Premium Short Courses
  • 70+ Structured Learning Paths
  • Validation of Completion with All Courses and Learning Paths
  • New Courses Added Every Month
Early Access Offer

Pro +

Experience immersive learning with Practice Labs and CTF Challenges for comprehensive skill-building.

$ 699.00
Billed annually or $79.00 billed monthly
Get Started Now
Start your 7-day trial for $1

Everything in Pro and

  • 500+ Practice Labs with Guided Instructions
  • 400+ CTF Challenges with Detailed Walkthroughs
  • New Practice Labs and Challenges Added Every Month

Related Courses

  • Bootstrap 4 Quick Website Bootstrap Components Course
    Short Course

    Bootstrap 4 Quick Website Bootstrap Components Course

    Software Development

    Explore the basics of Bootstrap and learn to create a website...

    $49.99

    Beginner

    1 hr 30 m

  • CCNA - Understanding Routers and Switches
    Short Course

    CCNA - Understanding Routers and Switches

    Security Architecture and Operations

    A comprehensive guide to understanding the in-depth functioni...

    $49.99

    Intermediate

    2 hr 0 m

  • The Complete Full-Stack JavaScript Course
    Short Course

    The Complete Full-Stack JavaScript Course

    Software Development

    Learn full-stack web development using JavaScript (ReactJS, N...

    $79.99

    Beginner

    24 hr 17 m

  • React.JS for Ecommerce: Building a Store with React.JS
    Short Course

    React.JS for Ecommerce: Building a Store with React.JS

    DevSecOps

    From React.js Fundamentals to Crafting an Online Storefront

    $49.99

    Advanced

    3 hr 30 m

  • CISSP Certification Domains 5, 6, 7, and 8 Video Training
    Short Course

    CISSP Certification Domains 5, 6, 7, and 8 Video Training

    Cybersecurity

    This course is ideal for individuals who desire to pass the I...

    $69.99

    Intermediate

    6 hr 30 m

  • Helm 3 - Package Manager for Kubernetes
    Short Course

    Helm 3 - Package Manager for Kubernetes

    Software Development

    A must tool for every DevOps engineer

    $49.99

    Intermediate

    1 hr 27 m

  • Learn Ethical Hacking by Hacking Real Websites Legally
    Short Course

    Learn Ethical Hacking by Hacking Real Websites Legally

    Vulnerability Assessment and Pentesting

    Fun way to learn ethical hacking by playing online hacking ga...

    $69.99

    Beginner

    4 hr 18 m

  • Mastering Ansible Playbooks: Debugging and Security
    Short Course

    Mastering Ansible Playbooks: Debugging and Security

    Software Development

    Securing and Automating Linux and Windows Systems with Advanc...

    $99.99

    Advanced

    5 hr 34 m

1 50
View all