JavaScript

JavaScript

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Last Update	09/13/2026
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Section 2: Core Syntax and Types

10Lessons ·
- 7: Variables: var, let, and const
  
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- 13: Template Literals
  
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Section 5: Functions

11Lessons ·
- 29: Arrow Functions
  
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- 30: Default and Rest Parameters
  
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Section 6: Objects and Arrays

12Lessons ·
- 41: Destructuring Objects and Arrays
  
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- 42: Spread and Rest Syntax
  
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Section 7: Maps, Sets, and Symbols

4Lessons ·
- 53: WeakMap and WeakSet
  
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Section 9: Object-Oriented and Prototypes

9Lessons ·
- 71: ES6 Classes
  
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Section 12: Modern JavaScript (ES2015-ES2025)

10Lessons ·
- 99: Let, Const, and Block Scoping Revisited
  
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- 105: Array and Object New Methods by Version
  
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- 108: Generators and Iterators in JavaScript
  
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Section 26: More Object and Class Practice

4Lessons ·
- 200: The Proxy and Reflect APIs
  
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Section 36: More Global Functions (MDN Reference)

5Lessons ·
- 248: isNaN vs Number.isNaN
  
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