Array And Object Data Structure in JavaScript | Day 35 | Web Development Course 2023

Arrays and objects are fundamental data structures in JavaScript used to store and organize information. While they share some similarities, they have distinct characteristics and serve different purposes.

Arrays:

Ordered collection: An array is an ordered collection of elements, meaning each element has a specific index that determines its position.
Homogeneous or heterogeneous: Arrays can hold elements of the same data type (homogeneous) or different data types (heterogeneous).
Mutable: You can modify the elements of an array after its creation.
Dynamic: Arrays can grow or shrink in size as needed.
Access by index: Elements in an array can be accessed using their numerical index.
Here's an example of an array:

JavaScript
const fruits = ["apple", "banana", "orange"];
fruits[1]; // Output: "banana"
fruits.push("mango"); // Add "mango" to the array
Use code with caution. Learn more
Objects:

Unordered collection: An object is an unordered collection of key-value pairs, where each key is a unique identifier for its associated value.
Heterogeneous: Objects can hold values of any data type.
Mutable: You can modify the key-value pairs of an object after its creation.
Dynamic: Objects can grow or shrink in size as needed.
Access by key: Values in an object are accessed using their associated keys.