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How to define a function in JavaScript

Functions and Scopedeclaration, functions, js scope, syntax

Master JavaScript function declarations, including standard and arrow functions. Understand function hoisting, `this` context management, and common pitfalls like variable shadowing and default parameters. Learn how to leverage concise syntax and avoid traps to write robust, error-free code in JavaScript.

Classes and Inheritance

How to define a class in JavaScript

Classes and Inheritanceclass, declaration, js classes, syntax

JavaScript class inheritance uses the extends keyword for subclasses. The super() function calls the parent constructor, inheriting properties. Subclasses can override methods for polymorphism or call parent methods with super.methodName(). This system is based on prototype-based inheritance.