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Expert JavaScript

Stop learning JavaScript in bits and pieces from here and there. Learn it once and learn it to be an Expert.

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Essential JavaScript

Introduction to JavaScript

  • Why JavaScript
  • What is ECMA Script
  • ECMA Script vs JavaScript
  • JavaScript Engines
  • JavaScript Environments
  • Client Side JavaScript
  • Server Side JavaScript
  • JavaScript for Desktop Applications

Variables & Data Types

  • Introduction to Variables
  • Different ways to create Variables
  • Using var, let and const
  • Data Types in JavaScript
  • Primitive Data Types
  • Reference Data Types
  • Primitive vs Reference Data Types

Numbers

  • Numbers in JavaScript
  • Floating Point Numbers
  • IEEE 754 standards
  • Special numeric values
  • Not A Number, Infinity, -Infinity
  • Numbers of Different Base
  • Binary, Octal and Hexa Decimal Numbers
  • Issues with Floating Point Numbers
  • Solving the issues of Floating Point Numbers
  • Max and Min Safe Integers

Strings

  • Strings in JavaScript
  • Creating Strings in multiple ways
  • Multiline Strings
  • Variables inside Strings
  • Template Literals
  • Double,Single Quotes vs Template literals
  • String Methods

Booleans

  • Booleans in JavaScript
  • Creating and using boolean data types
  • Falsy things in JavaScript
  • Comparison Operators
  • Strict Comparison
  • Abstract Comparison
  • Strict vs Abstract Comparison

Undefined & Null

  • Null in Programming languages
  • Undefined & Null in JavaScript
  • Undefined vs Null
  • Non Nullability
  • Null Aware Operator
  • Handling Null & Undefined values

Symbols & Bigint

  • Introduction to Symbols
  • Purpose of Symbols
  • Creating & Using Symbols
  • Advantages of Symbols
  • Introduction to Bigint
  • Purpose of Bigint
  • Creating & Using Bigint
  • More on Symbols in Advanced JavaScript

Reference Data Types

  • Introduction to Reference Data Type
  • Issues with Reference Data Types
  • Shallow Copy
  • Deep Copy
  • A note on State Management
  • Spread Operator
  • Object Assign
  • Levels of Deep Copy

Arrays

  • Introduction to Arrays
  • Creating and Accessing Arays
  • Working with Array Methods
  • IndexOf, Includes
  • Push, Pop, Shift, Unshift, Splice
  • ForEach, Map, Filter, Slice
  • Find, FindIndex
  • Every, Some
  • Flat, FlatMap
  • Entries, Keys
  • More on Arrays & Iterables in Advanced JavaScript

Objects

  • Objects in JavaScript
  • Creating and Accessing Objects and their properties
  • Deleting Properties
  • Handling Dynamic Properties
  • Iterating through an Object
  • Objects Keys, Values and Entries
  • Objects Own Properties, Has Own Property
  • Objects Inherited Propertiess
  • More on Objects in Advanced JavaScript

Functions

  • Introduction to functions
  • Types of Functions in JavaScript
  • Named Functions
  • Anonymous Functions
  • Arrow Functions
  • IIFE functions
  • Functions with Parameters
  • Default Parameters
  • Arguments Object
  • Rest Params
  • More on Functions in Advanced JavaScript

Object Oriented Programming

  • OOPs in JavaScript
  • Introduction to Classes
  • Constructor Function
  • Implementing Inheritance
  • Implementing Polymorphism
  • Access Modifiers
  • Public Properties
  • Private Properties
  • Static Properties

Promises

  • Introduction to Promises
  • Creating Promises
  • Resolving and Rejecting Promises
  • Promises Statuses
  • Handling promise using then..catch..finally
  • Creating Promises with Async Functions
  • Handling promise using async await .. Try & Catch
  • Error Handling Promises
  • More on Promises in Advanced JavaScript

Fetch API

  • Introduction to Fetch API
  • Get Request
  • Post Request with Body using Fetch
  • Put/Patch Requests using Fetch
  • Delete Request
  • Client Server Communication
  • Http Headers
  • Fetch request with Headers
  • Error Handling

Misc.

  • Built-in Timer Functions
  • Set Timeout
  • Set Interval & Clear Interval

Advanced JavaScript

Asynchronous JavaScript

  • Introduction to Asynchronous Programming
  • Synchronous JavaScript
  • Single Threaded JavaScript
  • Event Loop
  • Events & Macrotasks
  • Jobs & Microtasks
  • Execution Order
  • What in JavaScript are events and what are jobs
  • Race Conditions
  • Benefits of Asynchronous Programming
  • Handling Asynchronous JavaScript

Prototypes

  • Prototype Based Programming
  • Traditional ways of implementing OOPs in JavaScript
  • Factory/Constructor Functions
  • this keyword inside functions
  • Prototypes
  • Prototype Chain
  • Inheritance using Prototypes
  • Polymorphism using Prototypes
  • Built-in Objects in JavaScript
  • Extending Built-in Objects Functionality

More about Objects

  • Different ways to create an object
  • Object Prototypes
  • Setting Object Prototypes
  • Symbols as Objects Properties
  • Advantages of Symbols as Object Propeties
  • Object Property Properties
  • Writable, Configurable, Enumerable
  • Creating Immutable Objects
  • IsExtensible
  • Freeze, Seal

More About Promises

  • Chaining Promises
  • Handling Multiple Promises
  • Promise All & Its use cases
  • Promise All Settled & Its use cases
  • Promise Race & Its use cases
  • Promise Any & Its use cases
  • Promises Execution
  • Promises and Asynchronous JavaScript
  • Promises vs Synchronous JavaScript
  • Promises vs Events

Closures & Scopes

  • Scopes in JavaScript
  • Global Scope
  • Functional Scope
  • Block Scope
  • Lexical Scope
  • What is a Closure
  • How to create a Closure
  • Advantages of Closures

Execution Context & Hoisting

  • Execution Context in JavaScript
  • Creation Phase
  • Execution Phase
  • Call Stack
  • Hoisting in JavaScript
  • Temporal Dead Zones
  • Hoisting of Functions
  • Hoisting in ES6 JavaScript
  • Hoisting of Classes

Sets

  • Introduction to Sets in JavaScript
  • Sets vs Arrays
  • Advantages of Sets
  • Creating and Accessing Sets
  • Working with Sets Methods
  • Union, Subset, Superset, Intersection, Disjoint on Sets
  • Iterating Sets
  • Arrays to Sets and viceversa
  • Strings to Sets and viceversa
  • Sets from Maps

Maps

  • Introduction to Maps in JavaScript
  • Maps vs Objects
  • Issues with Objects in JavaScript
  • Advantages of Maps
  • Creating and Accessing Maps
  • Working with Maps Methods
  • Iterating Maps
  • Maps from Objects
  • Maps from Sets
  • Disadvantages of Maps

WeakMaps & WeakSets

  • Introduction to WeakMaps
  • Maps vs WeakMaps
  • Sets vs WeakSets
  • Meta Programming
  • Advantages of WeakMaps & WeakSets
  • Creating and Working with WeakMaps & WeakSets

Iterators & Generators

  • Introduction to Sets in JavaScript
  • Sets vs Arrays
  • Advantages of Sets
  • Creating and Accessing Sets
  • Working with Sets Methods
  • Union, Subset, Superset, Intersection, Disjoint on Sets
  • Iterating Sets
  • Arrays to Sets and viceversa
  • Strings to Sets and viceversa
  • Sets from Maps

Modules

  • Introduction to Modules
  • Modules in Traditional JavaScript
  • Modules in Node JS
  • Modules in JavaScript
  • Import & Exports
  • Named Exports
  • Default Exports
  • Importing Named & Default Exports
  • Renaming during imports
  • Lazy Loading

WeakMaps & WeakSets

  • Introduction to WeakMaps
  • Maps vs WeakMaps
  • Sets vs WeakSets
  • Meta Programming
  • Advantages of WeakMaps & WeakSets
  • Creating and Working with WeakMaps & WeakSets