This repository is a comprehensive collection of JavaScript interview questions and answers, serving as an educational resource for developers preparing for technical interviews. It consists of hundreds of questions organized by topic and difficulty, each with detailed explanations, code examples, and further reading references. The content is structured with metadata enabling categorization, filtering, and multilingual support (English, Portuguese, Chinese). The repository includes automated systems for generating the README from structured data, validating content quality, and managing translations. As a public mirror of GreatFrontEnd's main repository, it provides a searchable, well-organized knowledge base covering core JavaScript concepts, web APIs, security, performance optimization, testing, and design patterns.
This repository is an educational documentation project, not a runtime application: index.js is a placeholder comment, and the only executable code is a ~70-file Vitest test suite whose purpose is to verify, line-by-line, the code examples embedded in ~60 MDX documentation pages. The docs cover 33 core JavaScript concepts plus a 'Beyond 33' extension of ~29 advanced topics (observer APIs, memory management, WeakMap/WeakSet, IndexedDB, etc.), rendered as a Mintlify site at 33jsconcepts.com. Each test file maps 1:1 to a concept page and references exact source line numbers in the .mdx files, making the tests executable documentation. GitHub Actions CI runs the suite on push/PR against Node LTS.