JavaScript 101 (Day 9): Arrays Explained (Basics, push, pop, map, filter)

Welcome to Day 9 of the JavaScript 101 Course! 📊 Ever needed to store a list of items, like usernames, scores, or shopping cart items? JavaScript Arrays are the answer! Let's learn how to create and manipulate ordered collections of data.

In this essential lesson (Day 9), we dive into JavaScript Arrays:
✅ What are Arrays? Understanding lists in JS and how to create them (`[]`).
✅ Accessing Data: How to get individual items using their index (remember: arrays start at index 0!).
✅ Adding with `.push()`: Easily add new elements to the end of your array.
✅ Removing with `.pop()`: Quickly remove the last element from your array.
✅ Transforming with `.map()`: Create a brand NEW array by applying a function (like the arrow functions from Day 8!) to each element.
✅ Filtering with `.filter()`: Create a brand NEW array containing only the elements that pass a specific test (also uses functions!).

Arrays are incredibly common and powerful. Methods like `.map()` and `.filter()` are staples of modern JavaScript for data manipulation! Keep building your skills daily!

👇 YOUR TURN! Comment Below:
Which array method (`push`, `pop`, `map`, `filter`) do you think you'll use most often? Why? OR, if `let fruits = ["apple", "banana", "cherry"];`, what code would you write to get "banana"?

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