Arrays
What is Array:
An array is a data structure that stores multiple values in a single variable. Learn more
Why use Array:
Arrays allow storing and managing multiple values efficiently, reducing the need for separate variables. Read more
Where to use Array:
Arrays are used in data storage, iteration, and manipulation, such as storing user lists or handling game data.
How to create and access members of an Array:
let arr = [1, 2, 3]; console.log(arr[0]); // Output: 1
More on Accessing Arrays
When to use new Array();
Use new Array() for dynamic array creation or predefined size initialization.
More details
Objects
What is object:
Objects are collections of key-value pairs used to store structured data. Learn more
How to write Object:
let person = { name: "Alice", age: 25 };
Object Syntax
Why and when to use Object:
Objects are used for storing structured data like user profiles, configurations, or API responses.
How to access Object:
console.log(person.name); // Output: Alice
Guide to Objects
When to use new Object():
Use new Object() for dynamic object creation when keys and values are unknown at initialization.
Nested object:
let user = { profile: { name: "John", age: 30 } };
Nested Objects