denysdovhan/wtfjs
Wtfjs
This project is an educational resource and technical reference archive focused on the core architecture and counter-intuitive behaviors of the JavaScript programming language. It provides a comprehensive collection of language edge cases, syntax anomalies, and runtime inconsistencies that challenge standard developer assumptions. By grounding these examples in the official ECMAScript specification, the repository serves as a guide for understanding the underlying mechanics of the language.
The project distinguishes itself by cataloging specific instances of type coercion, operator precedence, and prototype-based inheritance that often lead to unexpected outcomes. It covers a wide range of language quirks, including non-obvious truthy or falsy evaluations, complex object property access, and inconsistencies in standard library methods. These examples are designed to help developers navigate the nuances of the dynamic type system and lexical environment binding.
Beyond its role as a reference for language mastery, the repository functions as a tool for debugging and technical interview preparation. It offers detailed explanations for why specific expressions behave as they do, helping users resolve complex bugs and deepen their understanding of how the language is parsed and executed. The content is structured to facilitate learning through direct observation of language anomalies and their corresponding specification-based justifications.