Скачать или смотреть Learn Web Development | Day 45: Advanced JavaScript Array Methods — Map, Filter, Reduce, Splice

Welcome to Day 45 of our Learn Web Development Series! 🚀

In this video, we explore Advanced Array Methods in JavaScript — crucial tools for efficiently handling data collections and transforming arrays like a pro.

If you’ve ever searched questions like:
What are advanced array methods in JavaScript?
How do map, filter, reduce, forEach work?
What’s the difference between splice, slice, and includes?
How do I loop through arrays more efficiently?
How to manipulate arrays for real projects?

Then this video is your complete guide. We break down each method, explain its purpose, syntax, and real-world examples in VS Code, making it easy for beginners and intermediates to master array manipulation.

💡 What You’ll Learn:
✅ How to check if an array contains a value using includes()
✅ Modifying arrays with splice()
✅ Transforming arrays using map()
✅ Iterating efficiently with forEach()
✅ Aggregating array values with reduce()
✅ Filtering arrays dynamically with filter()
✅ Best practices for advanced array manipulation in JavaScript

This lesson follows Day 44 (Loops) and prepares you for Day 46 (DOM Manipulation) — helping you combine loops and array methods for powerful JavaScript applications.

Timestamps
0:00 – Introduction: What Are Advanced Array Methods and Why You Need Them
0:40 – Lesson Overview: Day 45 – Mastering Array Methods in JavaScript
1:35 – Recap of Day 44: Loops and Iteration Techniques for Arrays
5:20 – What’s Next: Day 46 – DOM Manipulation Preview
7:05 – How to Check Array Contents Using includes()
17:35 – Modifying Arrays Dynamically with splice() Method
26:50 – Transforming Arrays: map() Explained with Examples
39:00 – Iterating Through Arrays Efficiently with forEach()
51:13 – Reducing Arrays: Using reduce() to Aggregate Data
58:55 – Filtering Arrays Dynamically Using filter()


Hashtags
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