Overview

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This course features Coursera Coach! A smarter way to learn with interactive, real-time conversations that help you test your knowledge, challenge assumptions, and deepen your understanding as you progress through the course. In this course, you’ll explore JavaScript runtime environments, the call stack, and how to handle synchronous operations. Learn about web workers and their role in improving concurrency, offloading tasks, and optimizing performance. Through hands-on examples, you'll set up web workers, manage tasks across threads, and monitor CPU utilization. You’ll also refactor code to ensure tasks are distributed evenly among workers, improving application performance. By the end, you'll understand how to use web workers to manage heavy tasks, enhance concurrency, and optimize your JavaScript applications effectively. This course is designed for JavaScript developers with basic programming knowledge. No prior experience with concurrency or web workers is needed. By the end of the course, you will be able to explain runtime environments, manage concurrency using web workers, and optimize application performance.

Syllabus

JavaScript Runtime Environment

In this module, we will explore the fundamental JavaScript runtime environment, focusing on how it manages the execution of JavaScript code. You'll learn about the call stack and synchronous operations. We'll also discuss the challenges faced when a single call stack handles multiple tasks, providing insights into the architecture behind JavaScript execution.

Threads, Cores, Concurrency, and Parallelism

In this module, we will introduce and explain key concepts like threads, cores, concurrency, and parallelism. We will also differentiate concurrency from parallelism, explaining their significance in optimizing code performance. By the end of this section, you'll gain an understanding of how and when to use concurrency and parallelism in your projects, along with insights on web workers.

Web Workers (and yes, worker threads)

In this module, we will dive into web workers, explaining how they function independently from the main thread to handle concurrent tasks. You will learn how to set up a web worker, pass data between threads, and optimize performance. Additionally, we'll explore creating worker threads in Node.js for more advanced concurrency management and demonstrate real-world examples.

Outro

In this module, we will wrap up the course, revisiting the core concepts you've learned about JavaScript runtime, web workers, and concurrency. This final section will help you consolidate your knowledge and understand how to apply it effectively in future JavaScript projects.