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JavaScript Features List

1. Core Language Features

Section titled “1. Core Language Features”
  • Dynamic Typing
  • First-Class Functions
  • Prototype-Based Inheritance
  • Hoisting
  • Closures
  • Asynchronous Programming (Promises, async/await)
  • Lexical Scoping
  • Block Scoping (let & const)
  • Spread and Rest Operators
  • Destructuring Assignment
  • Template Literals
  • Optional Chaining (?.)
  • Nullish Coalescing Operator (??)
  • Symbol Data Type
  • BigInt Support

2. Object-Oriented Programming (OOP)

Section titled “2. Object-Oriented Programming (OOP)”
  • Constructor Functions
  • Classes and Inheritance (ES6 Class Syntax)
  • Encapsulation using Closures
  • Private and Public Class Fields
  • Getters and Setters
  • Method Chaining
  • Mixins

3. Functional Programming Features

Section titled “3. Functional Programming Features”
  • Higher-Order Functions
  • Pure Functions
  • Immutability
  • Currying
  • Partial Application
  • Composition
  • Array Methods (map, filter, reduce, forEach, etc.)
  • Function Binding (bind, call, apply)

4. Asynchronous and Event-Driven Features

Section titled “4. Asynchronous and Event-Driven Features”
  • Event Loop
  • Callbacks
  • Promises
  • Async/Await
  • Event Listeners
  • Web Workers
  • Observables (RxJS)

5. Data Structures and Built-in Objects

Section titled “5. Data Structures and Built-in Objects”
  • Arrays and Typed Arrays
  • Sets and WeakSets
  • Maps and WeakMaps
  • Objects
  • JSON Parsing and Stringification
  • Date and Time Handling
  • Regular Expressions (RegExp)

6. Modules and Package Management

Section titled “6. Modules and Package Management”
  • ES6 Modules (import/export)
  • CommonJS Modules (require/module.exports)
  • Dynamic Imports
  • NPM (Node Package Manager)

7. Error Handling and Debugging

Section titled “7. Error Handling and Debugging”
  • Try…Catch…Finally
  • Error Object (Custom Errors)
  • Debugging using Console and DevTools
  • Strict Mode (‘use strict’)
  • Assertions

8. DOM Manipulation and Browser APIs

Section titled “8. DOM Manipulation and Browser APIs”
  • Document Object Model (DOM) Manipulation
  • Fetch API
  • Local Storage, Session Storage, and IndexedDB
  • WebSockets
  • Canvas API
  • Geolocation API
  • Notification API
  • Drag and Drop API
  • History API

9. Performance and Optimization Features

Section titled “9. Performance and Optimization Features”
  • Debouncing and Throttling
  • Lazy Loading
  • Tree Shaking
  • Code Splitting
  • WebAssembly (WASM)
  • Service Workers for Caching

10. Security Features

Section titled “10. Security Features”
  • Content Security Policy (CSP)
  • Same-Origin Policy
  • Cross-Origin Resource Sharing (CORS)
  • Secure Contexts (HTTPS-only Features)
  • Avoiding Prototype Pollution

11. Modern JavaScript Features (ES6+)

Section titled “11. Modern JavaScript Features (ES6+)”
  • Default Parameters
  • Rest and Spread Operators
  • Arrow Functions
  • Enhanced Object Literals
  • Optional Chaining
  • Nullish Coalescing
  • Dynamic Imports
  • Private Class Fields

12. Meta-Programming Features

Section titled “12. Meta-Programming Features”
  • Reflection (Reflect API)
  • Proxies
  • Generators and Iterators

13. Testing and Automation Features

Section titled “13. Testing and Automation Features”
  • Unit Testing Frameworks (Jest, Mocha, Jasmine)
  • End-to-End Testing (Cypress, Puppeteer, Playwright)
  • Code Coverage Analysis
  • Mocking and Spies

14. Internationalization and Localization Features

Section titled “14. Internationalization and Localization Features”
  • Intl API for Formatting Dates, Numbers, and Strings
  • Unicode Support
  • Right-to-Left (RTL) Text Handling
  • Pluralization and Translations
  • Timezone Management

References

Section titled “References”

This content is unique and compiled based on personal knowledge. If referencing, ensure compliance with the original sources of JavaScript documentation (e.g., MDN Web Docs, ECMA).