JavaScript's class syntax, introduced in ECMAScript 2015, provides a cleaner interface for creating object blueprints while maintaining the language's underlying prototypal architecture. Prior to this enhancement, developers relied on constructor functions combined with prototype manipulation to ach...
In JavaScript, constructors can share methods via their prototype objects so that every instance created from the constructor gains access without duplicating code. For example, to provide all instances of a constructor with an age calculation method: function Human(yearBorn) { this.yearBorn = yearB...
1. Prototype Chianing Inheritance (Simplest Approach) function Parent(name) { this.name = name; this.favoriteSports = ['basketball', 'football']; this.location = { country: 'China', city: 'Jiangsu' }; } function Child(name) { this.greet = function() { console.log('I am a child'); }; } Child.prototyp...
Task 1: Student Profile with Grade Analysis Implement a class representing student records with name, age, and subject scores. Include methods to retrieve name, age, and highest score. class Scholar: def __init__(self, full_name, years, marks): self.full_name = full_name self.years = years self.mark...
Single inheritance occurs when a subclass extends exactly one parent class. Multiple inheritance refers to a subclass deriving attributes and behaviors from two or more separate parent classes. Inheritance streamlines application development and maintenance by enabling code reuse and supporting the...
Polymorphism enables objects of different classes to be treated as objects of a common base class, allowing the same function call to produce different behaviors depending on the object type. For example, consider a ticket purchasing system where a regular person pays full price, a student pays half...
Inheritance establishes a parent-child relationship where a parent class encapsulates common attributes and behaviors, while child classes define their specific characteristics. A child class uses the extends keyword to inherit all members from the parent class, except for constructors. Members mark...