
JavaScript Basics
JavaScript the Good Parts: Practical Guide
5 min
92 articles



Learn how to retrieve object keys in JavaScript with Object.keys, Object.entries, and safe access patterns. A thorough guide for aspiring developers on javascript get key of object, including practical code examples and TypeScript considerations.



Master the core data structures of JS: create, access, and transform arrays and objects; explore iteration, destructuring, and copying for frontend code.



Learn how to add a class in JavaScript with a practical, step-by-step approach. Covering syntax, constructors, methods, inheritance basics, and common pitfalls.



Learn how to reliably detect own properties on JavaScript objects, compare hasOwnProperty, Object.has, and safe patterns with practical examples and best practices.
