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Don't overwhelm to learn JavaScript, JavaScript is only this much

1.Variables
โ€ข var
โ€ข let
โ€ข const

2. Data Types
โ€ข number
โ€ข string
โ€ข boolean
โ€ข null
โ€ข undefined
โ€ข symbol

3.Declaring variables
โ€ข var
โ€ข let
โ€ข const

4.Expressions
Primary expressions
โ€ข this
โ€ข Literals
โ€ข []
โ€ข {}
โ€ข function
โ€ข class
โ€ข function*
โ€ข async function
โ€ข async function*
โ€ข /ab+c/i
โ€ข string
โ€ข ( )

Left-hand-side expressions
โ€ข Property accessors
โ€ข ?.
โ€ข new
โ€ข new .target
โ€ข import.meta
โ€ข super
โ€ข import()

5.operators
โ€ข Arithmetic Operators: +, -, *, /, %
โ€ข Comparison Operators: ==, ===, !=, !==, <, >, <=, >=
โ€ข Logical Operators: &&, ||, !

6.Control Structures
โ€ข if
โ€ข else if
โ€ข else
โ€ข switch
โ€ข case
โ€ข default

7.Iterations/Loop
โ€ข do...while
โ€ข for
โ€ข for...in
โ€ข for...of
โ€ข for await...of
โ€ข while

8.Functions
โ€ข Arrow Functions
โ€ข Default parameters
โ€ข Rest parameters
โ€ข arguments
โ€ข Method definitions
โ€ข getter
โ€ข setter

9.Objects and Arrays
โ€ข Object Literal: { key: value }
โ€ข Array Literal: [element1, element2, ...]
โ€ข Object Methods and Properties
โ€ข Array Methods: push(), pop(), shift(), unshift(),
splice(), slice(), forEach(), map(), filter()

10.Classes and Prototypes
โ€ข Class Declaration
โ€ข Constructor Functions
โ€ข Prototypal Inheritance
โ€ข extends keyword
โ€ข super keyword
โ€ข Private class features
โ€ข Public class fields
โ€ข static
โ€ข Static initialization blocks

11.Error Handling
โ€ข try,
โ€ข catch,
โ€ข finally (exception handling)

ADVANCED CONCEPTS

12.Closures
โ€ข Lexical Scope
โ€ข Function Scope
โ€ข Closure Use Cases

13.Asynchronous JavaScript
โ€ข Callback Functions
โ€ข Promises
โ€ข async/await Syntax
โ€ข Fetch API
โ€ข XMLHttpRequest

14.Modules
โ€ข import and export Statements (ES6 Modules)
โ€ข CommonJS Modules (require, module.exports)

15.Event Handling
โ€ข Event Listeners
โ€ข Event Object
โ€ข Bubbling and Capturing

16.DOM Manipulation
โ€ข Selecting DOM Elements
โ€ข Modifying Element Properties
โ€ข Creating and Appending Elements

17.Regular Expressions
โ€ข Pattern Matching
โ€ข RegExp Methods: test(), exec(), match(), replace()

18.Browser APIs
โ€ข localStorage and sessionStorage
โ€ข navigator Object
โ€ข Geolocation API
โ€ข Canvas API

19.Web APIs
โ€ข setTimeout(), setInterval()
โ€ข XMLHttpRequest
โ€ข Fetch API
โ€ข WebSockets

20.Functional Programming
โ€ข Higher-Order Functions
โ€ข map(), reduce(), filter()
โ€ข Pure Functions and Immutability

21.Promises and Asynchronous Patterns
โ€ข Promise Chaining
โ€ข Error Handling with Promises
โ€ข Async/Await

22.ES6+ Features
โ€ข Template Literals
โ€ข Destructuring Assignment
โ€ข Rest and Spread Operators
โ€ข Arrow Functions
โ€ข Classes and Inheritance
โ€ข Default Parameters
โ€ข let, const Block Scoping

23.Browser Object Model (BOM)
โ€ข window Object
โ€ข history Object
โ€ข location Object
โ€ข navigator Object

24.Node.js Specific Concepts
โ€ข require()
โ€ข Node.js Modules (module.exports)
โ€ข File System Module (fs)
โ€ข npm (Node Package Manager)

25.Testing Frameworks
โ€ข Jasmine
โ€ข Mocha
โ€ข Jest
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