Table of Contents

• Chapter 1: Introduction to JavaScript 1
  • What is JavaScript?1
  • Where JavaScript Runs (Browser, Server, Desktop, etc.)1
  • Setting Up Your Development Environment (VS Code, Browsers, Node.js)2
Chapter 2: Your First JavaScript Program 4
• Hello World in JavaScript4
• Using <script> in HTML5
• Running JavaScript in the Browser Console7
• Commenting Your Code8
Chapter 3: Variables and Data Types 9
• Declaring Variables: var, let, const9
• Primitive Types: Number, String, Boolean, Undefined, Null, Symbol, BigInt11
• Type Checking with typeof12
Chapter 4: Operators and Expressions 13
• Arithmetic Operators13
• Assignment Operators14
• Comparison Operators15
• Logical Operators17
• String Concatenation18
• Operator Precedence19
Chapter 5: Control Flow and Decision Making 20
• if, else, and else if20
• switch Statements22
• Ternary Operator23
Chapter 6: Loops and Iteration 24
• for, while, and do...while Loops25
• break and continue26
• Looping Patterns (Countdowns, Accumulators)27
Chapter 7: Arrays and Array Methods 29
• Creating and Accessing Arrays29
• Common Array Methods (push, pop, shift, unshift, slice, splice)30
• Iterating Arrays with Loops33
• Advanced Array Methods (map, filter, reduce, forEach, find)35
Chapter 8: Objects and Object Literals 38
• Creating Objects38
• Accessing and Updating Properties40
• Nesting Objects42
• Iterating Over Objects44
Chapter 9: Functions and Scope 47
• Declaring Functions (function, arrow functions)47
• Parameters and Return Values49
• Function Expressions51
• Variable Scope and Hoisting53
• Closures (Introductory)56
Chapter 10: Events and User Interaction 58
• The DOM Event Model58
• addEventListener60
• Handling Click, Keyboard, and Form Events62
• Event Object and Propagation64
Chapter 11: The Document Object Model (DOM) 67
• Understanding the DOM Tree67
• Querying Elements (getElementById, querySelector)68
• Modifying DOM Elements70
• Creating and Removing DOM Elements72
Chapter 12: Error Handling and Debugging 74
• Types of Errors (Syntax vs Runtime)74
• Using try, catch, finally75
• The throw Statement77
• Debugging with Developer Tools79
Chapter 13: Working with Dates and Times 81
• Creating and Formatting Dates81
• Timestamps and Time Differences82
• Timers: setTimeout, setInterval85
Chapter 14: Strings and String Methods 87
• Common String Methods (slice, substr, replace, split, trim)87
• Template Literals90
• String Searching and Pattern Matching93
Chapter 15: Object-Oriented Programming (OOP) in JavaScript 95
• Constructor Functions95
• Prototypes and Inheritance97
• ES6 Classes100
• Encapsulation with Closures and Private Fields103
Chapter 16: Asynchronous JavaScript 106
• Synchronous vs Asynchronous Execution106
• Callbacks108
• Promises110
• async/await112
• Error Handling in Async Code115
Chapter 17: Working with APIs and Fetch 117
• What is an API?117
• Using fetch to Make HTTP Requests118
• Reading JSON Responses120
• Building a Simple Weather App122
Chapter 18: Modules and Code Organization 125
• Why Use Modules?125
• ES6 Modules (import / export)126
• CommonJS (for Node.js)128
• Organizing Large Projects130