JavaScript Tutorial
JavaScript Objects: Create, Modify, Delete with Example
Table of Contents
- Introduction
- What are Objects in JavaScript?
- How to Create an Object in JavaScript?
- How to Modify Properties in JavaScript Object
- How to Delete Properties in an Object
- How to Use Special Keys in Objects
- JavaScript Object Operations
- Common Mistakes with JavaScript Objects
FAQs Related to JavaScript Objects
An object is a collection of key-value pairs used to store related data and functionality.
Objects can be created using object literals, the new Object() constructor, or function constructors.
A method is a function stored as a property within an object.
Yes, objects can hold other objects as values, which are referred to as nested objects.
Properties can be accessed using dot notation (e.g., obj.key) or bracket notation (e.g., obj["key"]).
Object.keys() returns an array of the object’s keys.
Object.values() returns an array of the object’s values.
You can use the in operator or the hasOwnProperty() method.
The delete keyword removes a property from an object.
Yes, but such keys must be accessed using bracket notation.
Accessing a non-existent property returns undefined.
