01
The execution model
Call stack, event loop, microtask queue - explained through code you can run and observe yourself. Understanding this removes a whole category of bugs that otherwise feel random.
Learning Programme
JavaScript from first principles to production code
A structured seminar programme built around real problems, not slides. Each session goes deep on one topic so you leave with something you can actually use.
Reserve a place
12
Live sessions per cohort
215
Participants reviewed
4.8
Average rating
What the programme covers
Six topic areas, each treated as a standalone deep-dive. Participants can attend the full sequence or focus on the modules most relevant to their current work.
02
Closures and scope
Where variables live, how functions capture their environment, and why this matters for every pattern from callbacks to module design.
03
Async patterns in practice
Promises, async/await, and error propagation. Worked through with real network scenarios, not toy examples.
04
Working with the DOM
Event delegation, performance traps, and the difference between what the browser does and what your code tells it to do.
05
Module systems and bundling
ESM, CommonJS, and what actually happens when a bundler processes your code. Practical configuration for real project setups.
06
Testing and debugging
Writing tests that catch real failures, reading stack traces, and using browser and Node.js tools to understand what code is actually doing at runtime.
How sessions are structured
Each seminar follows a consistent format designed around active participation rather than passive listening.
Before the session
- Short reading: a focused problem statement sent 48 hours ahead
- Code sample: something to run locally and examine before arriving
During the session
- Live coding: the facilitator builds in real time, errors included
- Breakout discussion: small groups work through a specific scenario
- Q&A with context: questions answered with reference to the code on screen
After the session
- Annotated code: the session repository with comments added post-discussion
- Follow-up task: an optional extension problem for those who want to go further
Participant feedback after 215 reviews
Ratings collected from cohorts running since 2019. The programme has been revised seven times based on what participants said wasn't working.
Sessions run across APAC, European, and North American time zones - no single cohort is disadvantaged by
location
Recordings available for 30 days after each session with full code repository access
Small cohorts - a maximum of 18 participants per group keeps discussion substantive
Facilitators are practitioners, not career trainers - they work with JavaScript daily