Learn the most reliable methods to detect objects in JavaScript including typeof, instanceof, and Object.prototype.toString(). Handle edge cases like null and arrays effectively.
Learn how the propt variable works in JavaScript for...in loops, including why it iterates over inherited properties and how it differs from Object.keys() and other property access methods.
Learn why JavaScript array duplicate removal fails with zeros and discover multiple solutions. Complete guide to fixing prototype methods and modern ES6 approaches for unique array values.
Master JavaScript's 'new' keyword with our complete guide. Understand object creation, prototype inheritance, and best practices for modern JavaScript development.