Object-Oriented JavaScript Quiz

Object-Oriented JavaScript

• Prototypal Inheritance: Objects can inherit properties and methods from other objects using prototypes.
• Constructor Functions: Functions used to create objects, often combined with the new keyword.
• Classes (ES6): Introduced to provide a more traditional OOP syntax. Classes can extend other classes.
• Encapsulation: Using closures to create private variables. ES6 supports private fields with # syntax.
• Method Overriding: Child classes can override methods from parent classes to provide specific implementations.

Asynchronous Programming

• Callbacks: Functions passed as arguments to be executed later, often leading to "callback hell."
• Promises: Objects that represent the eventual completion or failure of an asynchronous operation, with then() for success and catch() for error handling.
• Async/Await: Syntactic sugar for working with promises, allowing asynchronous code to be written in a more synchronous fashion.
• Event Loop: Responsible for executing the code, collecting and processing events, and executing queued sub-tasks.

JavaScript Frameworks

• React: A library for building user interfaces, utilizing components and a virtual DOM for efficient rendering.
• Angular: A framework for building single-page applications, utilizing TypeScript, dependency injection, and two-way data binding.
• Vue.js: A progressive framework for building UIs, emphasizing simplicity and flexibility through reactive data binding.
• Node.js: A runtime environment for server-side JavaScript, allowing the use of JavaScript for backend development.

DOM Manipulation

• Document Object Model (DOM): A programming interface for HTML and XML documents, representing the page structure as a tree of objects.
• Selecting Elements: Methods like querySelector(), getElementById(), and getElementsByClassName() to access elements.
• Modifying Elements: Changing content with innerHTML, attributes with setAttribute(), and styles via style property.
• Event Handling: Attaching events using addEventListener() to respond to user inputs like clicks and key presses.

ES6 Features

• Let and Const: Block-scoped variable declarations for let and read-only constants with const.
• Arrow Functions: Short syntax for functions that inherit the this context lexically.
• Template Literals: Enhanced string literals allowing string interpolation and multi-line strings using backticks (``).
• Destructuring: Syntax for unpacking arrays or objects into distinct variables, simplifying code.
• Modules: Import and export functionality for encapsulating code in separate files, enhancing modularity and reusability.

Object-Oriented JavaScript

• Prototypal Inheritance: Objects can inherit properties and methods from other objects using prototypes. This allows for code reuse and creating hierarchical relationships between objects.
• Constructor Functions: Functions used to create objects, often combined with the new keyword. They provide a blueprint for creating objects with specific properties and methods.
• Classes (ES6): Introduced in ES6, providing a more traditional OOP syntax. Classes offer a clear structure for defining objects, including methods and properties. Classes can extend other classes, inheriting their characteristics and functionality.
• Encapsulation: Using closures to create private variables, making them accessible only within the object. This promotes data security and prevents accidental modification. ES6 supports adding true private fields using the # syntax.
• Method Overriding: Child classes can override methods from parent classes. This allows for specialized implementations of inherited methods.

Asynchronous Programming

• Callbacks: Functions passed as arguments to be executed later. They are often used for handling asynchronous operations, but excessive nesting can lead to "callback hell."
• Promises: Represents the eventual completion or failure of an asynchronous operation. They handle success with the then() method and errors with the catch() method.
• Async/Await: Syntactic sugar for working with promises. It allows for writing asynchronous code in a more synchronous style, making it easier to read and understand.
• Event Loop: Responsible for executing JavaScript code, collecting and processing events, and managing the execution of queued sub-tasks. It forms the foundation of the asynchronous nature of JavaScript.

JavaScript Frameworks

• React: A popular JavaScript library for building user interfaces. It utilizes components and a virtual DOM to efficiently render elements.
• Angular: A powerful framework for building complex web applications, especially single-page applications. It leverages TypeScript, dependency injection, and two-way data binding.
• Vue.js: A progressive framework for building flexible UIs. It focuses on simplicity and reactivity, making it easy to build both small and large projects.
• Node.js: A runtime environment for server-side JavaScript. It allows developers to use the same language for both front-end and back-end development, streamlining workflows.

DOM Manipulation

• Document Object Model (DOM): A programming interface for interacting with web pages. It represents the structure of a web page as a tree of objects.
• Selecting Elements: Methods like querySelector(), getElementById(), and getElementsByClassName() allow developers to target specific elements within the DOM.
• Modifying Elements: Modifying content with innerHTML, attributes with setAttribute(), and styles via the style property.
• Event Handling: Attaching events using addEventListener() to respond to user inputs like clicks, key presses, mouse movements, and more.

ES6 Features

• Let and Const: Block-scoped variable declarations with let and read-only constants with const. This helps improve code organization and prevent accidental variable reassignment.
• Arrow Functions: Short, concise syntax for functions, inheriting the this context lexically. They are often used in functional programming patterns.
• Template Literals: Enhanced string literals using backticks (``) for string interpolation and multi-line strings. They provide a clean and efficient way to create formatted strings.
• Destructuring: Syntax to unpack arrays or objects into distinct variables. This simplifies code by extracting values from collections directly.
• Modules: Import and export functionality for encapsulating code in separate files. This promotes modularity, reusability, and code organization.

Test your knowledge of Object-Oriented JavaScript concepts like prototypal inheritance, constructor functions, and classes introduced in ES6. Explore encapsulation and method overriding as well as dive into the basics of asynchronous programming with callbacks and promises.