August 2025

1. Object.seal() ✅ Example: 2. Object.freeze() ✅ Example: Key Difference Table Feature Object.seal() Object.freeze() Add new properties ❌ Not allowed...

1. Object Literal An object literal is the simplest way to create an object in JavaScript.You directly define the object...

In JavaScript, getters and setters are special methods that allow you to define how properties of an object are accessed...

1. Adding Properties You can add new properties to an object in multiple ways: ✅ Dot notation ✅ Bracket notation...

Prototype In JavaScript, every object has an internal hidden property called [[Prototype]] (often accessed using __proto__ or through Object.getPrototypeOf()). 👉...

Let’s break down this keyword in JavaScript step by step, because it behaves differently depending on where and how it...

In JavaScript (and in general OOP), 👉 Objects are collections of data (properties) and behavior (methods). 1. Object Properties ✅...

In JavaScript, an object is a collection of key-value pairs (properties), where keys are strings (or Symbols) and values can...

1. Function Scope 2. Block Scope ✅ Key Differences Feature Function Scope Block Scope Keyword var let, const Visibility Accessible...

In JavaScript, a private variable is a variable that is not accessible directly from outside the object/class where it is...