Arrays are fundamental data structures in JavaScript, allowing you to store and manipulate collections of data. Here's a concise overview:

🌟 Key Features

  • Ordered: Elements are stored in a specific sequence
  • Indexed: Accessible via numerical indices (0-based)
  • Dynamic: Can change size at runtime
  • Heterogeneous: Can hold elements of different types

🧱 Creating Arrays

// Syntax
let fruits = ["apple", "banana", "orange"];
let numbers = new Array(1, 2, 3);

🛠️ Common Methods

Method Description Example
push() Add elements to the end fruits.push("grape")
pop() Remove last element fruits.pop()
slice() Extract a portion fruits.slice(1, 3)
map() Transform elements numbers.map(x => x * 2)

📌 Example Use Case

let techStack = ["React", "Node.js", "MongoDB"];
techStack.forEach(item => console.log(`Using: ${item}`));

📚 Related Topics

For deeper understanding, check:
JavaScript Array Operations
Array Methods Reference

Array Structure