Struggling to Master JavaScript's Event Loop?
Tired of watching endless YouTube videos about promises and async/await but still feeling confused? Learning to program should be fun, right? Then why does JavaScript's execution model feel so impossibly complex? Break through the confusion with interactive challenges that build real intuition for how JavaScript actually works.
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Learning That Actually Sticks
Build real intuition for JavaScript's event loop through hands-on practice
Addictively Fun
Interactive challenges that make complex concepts click. You'll find yourself coming back for "just one more challenge"
Build Real Intuition
Stop memorizing patterns and start understanding how JavaScript's execution model actually works under the hood
Not for everyone!
Already know some JavaScript basics? Perfect! We'll help you master the tricky parts that everyone struggles with
Finally "Get" JavaScript's Event Loop
Stop watching tutorials and start building the mental model that makes everything click
Interactive Learning
Step through code execution line by line and see exactly how promises, timeouts, and the event loop work together
Instant Feedback
Get real-time explanations that help you understand not just what happens, but why it happens
Learning That Actually Works
From confusion to confidence in JavaScript's trickiest concepts
Rasmus Rudling
Founder of Julo
"I loved how easy it was to practise async JavaScript challenges right from my phone. The mobile-friendly interface meant I could learn anywhere—on the train, at lunch, or even in bed"
Meet Your Instructor
Hi, I'm Jesper Loso, a Tech Lead who's helped scale teams at various companies during my 10+ years in the industry.
I've seen firsthand how understanding JavaScript's execution model separates good developers from great ones. These interactive challenges improved my own understanding of the javascript event loop. Without any effort. How? Because I couldn't stop doing them. Try it you too, learning JavaScript can be fun and engaging!
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Choose your path to mastering JavaScript's event loop
Free Trial
Try out JS Brain Teasers with this course, free of charge. Get a feel for the platform and see if you can complete this very basic challenge.
Javascript Event Loop
Maybe you just learned how to code in javascript, but you are struggling to understand how promises work, why to use async/await or what microtasks and macrotasks are? This course is for you!
Ready to Finally Master JavaScript's Event Loop?
Stop struggling with async concepts and start building the intuition that makes everything click
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