"JavaScript: Understanding the Weird Parts" by Anthony Alicea is a highly regarded course and blog series focused on mastering the language's core mechanisms. It explores complex concepts like hoisting, closures, execution contexts, and prototypal inheritance to help developers write more robust code. Explore the foundational concepts and read a detailed review at Peter Lanier's Blog . 4 sites Javascript: understanding the weird parts [Part 1] Jan 18, 2016 —

In software development, this distinguishes a "coder" from a "senior developer". When you understand the engine, you stop being afraid of errors and start using the tool's unique nature to your advantage. Case Study: The "Weird Parts" of JavaScript

The phrase "understanding the weird parts" is most famously associated with deep dives into (often referencing the popular course "JavaScript: Understanding the Weird Parts").