What You'll Learn
Prerequisites
- No prior programming experience needed
- Basic computer knowledge
- A laptop with internet access
- Enthusiasm to learn!
Tools & Setup
📖 Tutorial Chapters & Curriculum
Follow the structured learning path from beginner to advanced
1
Introduction to JavaScript
Overview of JavaScript language and its usage
2
JavaScript Setup & Console
Running JavaScript in browser and Node
3
Variables in JavaScript
- Variables in JavaScript 7 min
4
Data Types in JavaScript
- Data Types in JavaScript 8 min
5
Operators in JavaScript
- Operators in JavaScript 7 min
6
Type Conversion
- Type Conversion 6 min
7
Conditional Statements
- Conditional Statements 8 min
8
Loops in JavaScript
- Loops in JavaScript 9 min
9
Arrays in JavaScript
- Arrays in JavaScript 8 min
10
Objects in JavaScript
- Objects in JavaScript 9 min
11
JSON in JavaScript
- JSON in JavaScript 7 min
12
String Methods
- String Methods 7 min
13
Number Methods
- Number Methods 6 min
14
Math Object in JavaScript
Using Math functions
15
Date Object JavaScript
- Date Object JavaScript 7 min
16
Functions in JavaScript
- Functions in JavaScript 8 min
17
Function Expressions in JavaScript
Anonymous functions
18
Arrow Functions in JavaScript
Using concise function syntax.
19
Scope in JavaScript
- Scope in JavaScript 8 min
20
Closures in JavaScript
- Closures in JavaScript 10 min
21
IIFE in JavaScript
- IIFE in JavaScript 8 min
22
Callback Functions in JavaScript
Passing functions as arguments
23
Higher Order Functions in JavaScript
Functions that accept functions
24
Bind, Call, and Apply in JavaScript
Understanding this binding
25
Execution Context in JavaScript
Call stack and scope chain
26
Introduction to DOM
- Introduction to DOM 8 min
27
Selecting Elements in JavaScript
Selecting DOM elements using query selectors.
28
Modifying Content In JavaScript
Updating text and HTML content dynamically.
29
Changing Attributes in JavaScript
Adding, removing and updating attributes.
30
Manipulating Styles in JavaScript
Changing CSS styles dynamically.
31
Creating and Removing Elements in JavaScript
Creating, appending and deleting elements.
32
Event Handling Basics
- Event Handling Basics 9 min
33
Event Propagation in JavaScript
Bubbling and capturing phases explained.
34
Event Delegation in JavaScript
Optimizing events using delegation.
35
Form Handling in JavaScript
- Form Handling in JavaScript 10 min
36
Local Storage and Session Storage in JavaScript
Storing data in browser storage.
37
Cookies in JavaScript
- Cookies in JavaScript 8 min
38
Window Object in JavaScript
Understanding window object properties.
39
Location and History API in JavaScript
Working with URL and navigation history.
40
Timers and Animation in JavaScript
Using setTimeout, setInterval and basic animations.
41
Introduction to ES6 Modern JavaScript
Overview of modern JavaScript (ES6 and beyond).
42
Let and Const
- Let and Const 8 min
43
Arrow Functions in JavaScript
Modern ES6 arrow syntax
44
Template Literals
- Template Literals 7 min
45
Default Parameters in JavaScript
Setting default function values.
46
Destructuring Arrays
- Destructuring Arrays 8 min
47
Destructuring Objects
- Destructuring Objects 8 min
48
Spread Operator in JavaScript
Expanding arrays and objects.
49
Rest Parameters in JavaScript
Handling variable number of arguments.
50
Enhanced Object Literals in JavaScript
Modern object property shorthand.
51
Classes in ES6 Javascript
Object oriented programming with classes.
52
Modules in JavaScript
- Modules in JavaScript 9 min
53
Javascript Promises
- Javascript Promises 10 min
54
Javascript Async and Await
- Javascript Async and Await 10 min
55
Optional Chaining and Nullish Coalescing in JavaScript
Handling undefined values safely.
56
Introduction to Asynchronous JavaScript
Understanding synchronous vs asynchronous execution.
57
JavaScript Event Loop
- JavaScript Event Loop 10 min
58
Javascript Call Stack and Callback Queue
Understanding execution order.
59
JavaScript setTimeout and setInterval
Scheduling tasks in JavaScript.
60
Callback Functions in JavaScript
Using callbacks for async tasks.
61
JavaScript Callback Hell
- JavaScript Callback Hell 8 min
62
Introduction to Promises in JavaScript
Modern async handling with promises.
63
Promise Chaining in JavaScript
Executing sequential async tasks.
64
Promise.all and Promise.race in JavaScript
Handling multiple promises.
65
JavaScript Error Handling in Promises
Using catch and finally.
66
JavaScript Async Await Deep Dive
Understanding async/await internally.
67
JavaScript Error Handling with Async Await
Using try/catch for async functions.
68
Microtasks vs Macrotasks in JavaScript
Understanding task queues.
69
JavaScript Fetch API
- JavaScript Fetch API 8 min
70
AbortController and Request Cancellation in JavaScript
Canceling async requests safely.
71
Execution Context in JavaScript
Understanding how JavaScript code executes internally.
72
Lexical Environment
- Lexical Environment 9 min
73
Closures Deep Dive
- Closures Deep Dive 12 min
74
Hoisting Explained
- Hoisting Explained 8 min
75
Temporal Dead Zone
- Temporal Dead Zone 8 min
76
Prototype and Prototypal Inheritance
How inheritance works in JS.
77
Object.create and Object.assign
Advanced object manipulation.
78
Property Descriptors
- Property Descriptors 9 min
79
Reflect API
- Reflect API 8 min
80
Proxy in JavaScript
- Proxy in JavaScript 10 min
81
Symbols in JavaScript
- Symbols in JavaScript 8 min
82
WeakMap and WeakSet
- WeakMap and WeakSet 8 min
83
Garbage Collection in JavaScript
How memory management works.
84
Debouncing and Throttling
- Debouncing and Throttling 10 min
85
Currying and Function Composition
Functional programming techniques.
86
Object-Oriented Programming in JavaScript
Understanding OOP principles in JavaScript.
87
Classes in JavaScript
- Classes in JavaScript 9 min
88
Constructor Functions
- Constructor Functions 8 min
89
Encapsulation in JavaScript
Data hiding and private properties.
90
Inheritance with Classes
- Inheritance with Classes 9 min
91
Polymorphism in JavaScript
Method overriding and dynamic behavior.
92
Abstraction in JavaScript
Hiding internal implementation details.
93
Factory Pattern
- Factory Pattern 9 min
94
Singleton Pattern
- Singleton Pattern 10 min
95
Module Pattern
- Module Pattern 8 min
96
Observer Pattern
- Observer Pattern 10 min
97
Strategy Pattern
- Strategy Pattern 9 min
98
Decorator Pattern
- Decorator Pattern 9 min
99
Dependency Injection
- Dependency Injection 9 min
100
Design Patterns Best Practices
Choosing the right design pattern.
101
JavaScript Performance Fundamentals
Core principles of writing high-performance JavaScript.
102
Understanding the Rendering Pipeline
How browsers render web pages.
103
Avoiding Reflows & Repaints
Optimizing DOM updates for performance.
104
Memory Management in JavaScript
Understanding garbage collection.
105
Detecting Memory Leaks
- Detecting Memory Leaks 9 min
106
Debouncing & Throttling
- Debouncing & Throttling 10 min
107
Optimizing Loops & Iterations
Writing efficient loops.
108
Efficient DOM Manipulation
Best practices for DOM performance.
109
Using Web Workers
- Using Web Workers 10 min
110
Lazy Loading Techniques
- Lazy Loading Techniques 8 min
111
Code Splitting Strategies
Reducing bundle size.
112
Tree Shaking Explained
- Tree Shaking Explained 8 min
113
Minification & Compression
Optimizing production builds.
114
Performance Profiling with DevTools
Using Chrome DevTools for performance analysis.
115
Best Practices for Production Performance
Checklist for high-performance JS apps.
116
Introduction to JavaScript Tooling
Overview of modern JavaScript development tools.
117
NPM and Package Management
Managing dependencies using NPM.
118
Yarn and PNPM
- Yarn and PNPM 8 min
119
Understanding package.json
Configuring project metadata and scripts.
120
Using Webpack
- Using Webpack 10 min
121
Using Vite in JavaScript
- Using Vite in JavaScript 8 min
122
Babel Transpiler
- Babel Transpiler 9 min
123
ESLint & Prettier
- ESLint & Prettier 8 min
124
Testing with Jest
- Testing with Jest 10 min
125
Testing with Cypress
- Testing with Cypress 10 min
126
Using TypeScript with JavaScript
Adding static typing to JS.
127
Git for JavaScript Developers
Version control essentials.
128
Using GitHub Actions
- Using GitHub Actions 9 min
129
Deploying JavaScript Apps
- Deploying JavaScript Apps 10 min
130
JavaScript Ecosystem Overview
Understanding frameworks and libraries.
🎯 Interview Preparation
Top Python interview questions organized by difficulty
Easy
40 Questions
Freshers / Entry Level
- What is JavaScript?
- What are JavaScript data types?
- What is undefined?
- What is null?
- Difference between var, let, and const?
Medium
50 Questions
Experienced / Mid-Level
- Explain Event Loop in detail.
- What is Call Stack?
- Microtasks vs Macrotasks?
- Explain lexical scope.
- What is closure in loops issue?
Hard
30 Questions
Senior / Lead Level
- How V8 engine works internally?
- Explain Just-In-Time compilation.
- What is garbage collection algorithm?
- Explain event loop phases in Node.js.
- Implement custom Promise.
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Web Design
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