Map, filter & reduce in JavaScript
MindCraft Frontend Web Dev - JS Essential Lecture 20
Course by: MindCraft
In this episode of Namaste JavaScript, we explore the powerful array methods map(), filter(), and reduce(), which are fundamental to functional programming paradigms in JavaScript. These higher-order functions enable developers to manipulate arrays with concise and expressive code, making complex operations simpler and more efficient.
Topics Covered:
00:00 - Introduction
00:40 - Array.map() function in JavaScript
01:39 - Example 1 - map()
03:23 - Example 2 - map()
04:01 - Example 3 - map()
06:43 - Array.filter() function in JavaScript
07:03 - Example 4 - filter()
09:00 - Example 5 - filter()
09:26 - Example 6 - filter()
11:36 - Array.reduce() function in JavaScript
12:18 - Example 7 - reduce()
18:41 - Example 8 - reduce()
23:07 - Example 9 - Tricky map()
25:40 - Example 10 - Tricky reduce()
31:49 - Example 11 - Chaining map(), filter(), & reduce()
35:31 - Homework - Challenge
36:30 - Teaser for the Next Video
37:14 - Thank You for Watching Namaste JavaScript
In this session, we delve deep into map(), filter(), and reduce(), showcasing their versatility through a series of 11 detailed code examples ranging from basic usage to advanced scenarios. By mastering these array methods, you'll gain a solid foundation in functional programming techniques, essential for modern JavaScript development.