JSConf Courses

Source Maps Through the Looking Glass

Explore the inner workings of source maps, their generation tools, and parsers. Learn to manipulate them directly for enhanced debugging and development workflows.

• YouTube
• 24 minutes
• Self-Paced
• Conference Talk

My Gender Is - Shipping Expanded Gender Options

Explore expanded gender options in software, addressing inclusivity challenges, measuring impact, and navigating social justice projects in tech workplaces.

• YouTube
• 22 minutes
• Self-Paced
• Conference Talk

YES, Your Site Too Can - and Should - Be Accessible

Learn to make your website accessible with practical solutions and lessons from The Financial Times' journey. Discover how to integrate accessibility into your process, regardless of resources.

• YouTube
• 26 minutes
• Self-Paced
• Conference Talk

CSS and the First Meaningful Paint

Exploring strategies for optimizing CSS loading to achieve rapid first meaningful paint, including inline CSS, HTTP/2 server push, and Service Workers for faster, more resilient user experiences.

• YouTube
• 38 minutes
• Self-Paced
• Conference Talk

The Past, Present, and Future of JavaScript Date and Time APIs

Explore JavaScript's Date and Time APIs: past challenges, current library solutions, and future language improvements for better date/time handling in ECMAScript.

• YouTube
• 22 minutes
• Self-Paced
• Conference Talk

Can You Read Me? Creative JavaScript to Make Computer Science Fun

Explore creative JavaScript projects for learning computer science concepts through building machines to send secret messages, showcasing remote collaboration and innovative coding techniques.

• YouTube
• 32 minutes
• Self-Paced
• Conference Talk

A Brief History of Modularity

Explore modularity's history, benefits, and pitfalls in software development. Uncover its origins, examine current practices, and consider future implications for creating extensible code.

• YouTube
• 29 minutes
• Self-Paced
• Conference Talk

Two Problems - Regular Expressions for Revolutionaries

Demystifying regular expressions: their implementation in JavaScript, historical context, and practical applications for web developers.

• YouTube
• 22 minutes
• Self-Paced
• Conference Talk

Maintaining an OSS Project - Babel

Explore the journey of becoming an open-source maintainer, with insights on challenges, community interactions, and sustainability in OSS projects like Babel.

• YouTube
• 16 minutes
• Self-Paced
• Conference Talk

Parsing JavaScript - Better Lazy Than Eager?

Explore V8's JavaScript parsing strategies, performance improvements, and developer best practices for optimizing parse times in web applications.

• YouTube
• 25 minutes
• Self-Paced
• Conference Talk

Real World Connectivity - Beyond the Bubble

Exploring global internet connectivity, user demographics, and data costs to reshape web design and development perspectives for a more inclusive digital world.

• YouTube
• 29 minutes
• Self-Paced
• Conference Talk

CSS and the Hierarchy Problem - What Makes a CSS Developer?

Exploring hierarchies in CSS development, challenging categorizations between roles, and addressing diversity issues in the field to promote inclusivity and value all contributions.

• YouTube
• 29 minutes
• Self-Paced
• Conference Talk

Preact - Into the Void 0

Explore Preact's internals, demystifying JSX, Virtual DOM, and DOM diffing. Gain insights into performance optimizations and the inner workings of this lightweight React alternative.

• YouTube
• 28 minutes
• Self-Paced
• Conference Talk

JavaScript Engines - How Do They Even?

Explore JavaScript engine internals, compilation techniques, and performance optimization. Learn how to write efficient code for modern JS engines and understand their inner workings.

• YouTube
• 25 minutes
• Self-Paced
• Conference Talk

Alexander Pope - ServiceWorkers Outbreak

Explore the cautionary tale of a ServiceWorker disaster caused by a typo, learning crucial lessons about technology management and best practices in web development.

• YouTube
• 25 minutes
• Self-Paced
• Conference Talk