What background knowledge is necessary to enroll in this course?

Learners should have a basic understanding of JavaScript programming and general web development concepts. Familiarity with Node.js and browser-based JavaScript development will help learners follow along with the practical examples and hands-on exercises more effectively.

Who is this course for?

This course is designed for JavaScript developers, web developers, backend developers, and software engineers who want to deepen their understanding of concurrency, threading, and performance optimization in JavaScript applications.

Can I preview a course before enrolling?

Yes, you can preview the first video and view the syllabus before you enroll. You must purchase the course to access content not included in the preview.

When will I have access to the lectures and assignments?

If you decide to enroll in the course before the session start date, you will have access to all of the lecture videos and readings for the course. You’ll be able to submit assignments once the session starts.

What will I get when I enroll?

Once you enroll and your session begins, you will have access to all videos and other resources, including reading items and the course discussion forum. You’ll be able to view and submit practice assessments, and complete required graded assignments to earn a grade and a Course Certificate.

When will I receive my Course Certificate?

If you complete the course successfully, your electronic Course Certificate will be added to your Accomplishments page - from there, you can print your Course Certificate or add it to your LinkedIn profile.

Why can’t I audit this course?

This course is currently available only to learners who have paid or received financial aid, when available.

Is financial aid available?

Yes. In select learning programs, you can apply for financial aid or a scholarship if you can’t afford the enrollment fee. If fin aid or scholarship is available for your learning program selection, you’ll find a link to apply on the description page.

JavaScript Web Workers - A Practical Visual Guide 2026

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Wir übersetzen es in weitere Sprachen.

JavaScript Web Workers - A Practical Visual Guide 2026

Dozent: Packt - Course Instructors

Bei Mehr erfahren enthalten

4 Module

Verschaffen Sie sich einen Einblick in ein Thema und lernen Sie die Grundlagen.

Stufe Mittel

Empfohlene Erfahrung

4 Stunden zu vervollständigen

Flexibler Zeitplan

In Ihrem eigenen Lerntempo lernen

4 Module

Verschaffen Sie sich einen Einblick in ein Thema und lernen Sie die Grundlagen.

Stufe Mittel

Empfohlene Erfahrung

4 Stunden zu vervollständigen

Flexibler Zeitplan

In Ihrem eigenen Lerntempo lernen

Was Sie lernen werden

Understand JavaScript runtime environments and how they affect code execution.
Set up web workers and manage tasks across threads in JavaScript.
Optimize application performance by using worker threads and monitoring CPU utilization.

Kompetenzen, die Sie erwerben

Kategorie: Management Consulting
Kategorie: Server Side
Kategorie: OS Process Management
Kategorie: Javascript
Kategorie: Performance Testing
Kategorie: Performance Tuning

Werkzeuge, die Sie lernen werden

Kategorie: Frontend Performance

Wichtige Details

Zertifikat zur Vorlage

Zu Ihrem LinkedIn-Profil hinzufügen

Kürzlich aktualisiert!

Juli 2026

Bewertungen

4 Aufgaben

Unterrichtet in Englisch

Erfahren Sie, wie Mitarbeiter führender Unternehmen gefragte Kompetenzen erwerben.

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In diesem Kurs gibt es 4 Module

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.

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.

Das ist alles enthalten

4 Videos

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.

Das ist alles enthalten

8 Videos1 Aufgabe

8 VideosInsgesamt 35 Minuten

Section Introduction3 Minuten
What are threads?3 Minuten
Threads run on CPU cores4 Minuten
Concurrency intro3 Minuten
Concurrency an action5 Minuten
Parallelism4 Minuten
When to use (and NOT to use) web workers3 Minuten
Wrapping up with understanding our section example9 Minuten

1 AufgabeInsgesamt 15 Minuten

Threads, Cores, Concurrency, and Parallelism15 Minuten

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.

Das ist alles enthalten

12 Videos1 Aufgabe

12 VideosInsgesamt 65 Minuten

Intro to Web Workers and how they work5 Minuten
Setting up a Web Worker8 Minuten
Web Workers and the main thread do not share the same variables3 Minuten
Sending a message from the main thread to the worker with postMessage5 Minuten
Performing a task in the worker4 Minuten
Closing a web worker, and project files4 Minuten
Setting up a Node server project to run heavy tasks8 Minuten
Viewing CPU utilization when running a Node task2 Minuten
Creating a worker in Node, using the worker_threads module6 Minuten
Refactoring code, creating a dynamic run function and allocating tasks evenly9 Minuten
Completing our JavaScript code and sending each worker a task to perform5 Minuten
Testing code, and seeing the full power of workers!6 Minuten

1 AufgabeInsgesamt 15 Minuten

Web Workers (and yes, worker threads)15 Minuten

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.

Das ist alles enthalten

1 Video2 Aufgaben

Dozent

Packt - Course Instructors

Packt

2.082 Kurse614.592 Lernende

von

Packt

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Häufig gestellte Fragen

JavaScript concurrency refers to the ability to manage multiple tasks efficiently without blocking the main execution thread. It is highly relevant for modern web and server-side applications because it helps improve responsiveness, optimize performance, and handle computationally intensive operations more effectively.

This course focuses on the JavaScript runtime environment, the call stack, concurrency, parallelism, and the use of web workers in browser and Node.js environments. It provides practical guidance on setting up and managing worker threads, understanding CPU utilization, and improving application performance.

After completing this course, you will understand how the JavaScript runtime environment works and how synchronous execution impacts performance. You will be able to implement concurrency and parallelism using web workers and Node.js worker threads, optimize application responsiveness, and manage heavy computational tasks efficiently.