JavaScript Object defineProperty() Method

The Object.defineProperty() method in JavaScript is a Standard built-in object which defines a new property directly on an object or it can also modify the existing property of an object and return the object. 

Syntax:

Object.defineProperty(obj, prop, descriptor)

Parameters:

This method accepts three parameters as mentioned above and described below:

• Obj: This parameter holds the Object on which the user is going to define the property.
• Prop: This parameter holds the name of a property that is going to be defined or modified.
• Descriptor: This parameter holds the descriptor for the property being defined or modified.

Return Value:

• This method returns the object which is passed as the argument to the function. 

Example 1: In this example, we will add new properties to an object and print it in the console using the Object.defineProperty() method in JavaScript.

Output:

65
108

Example 2: In this example, we will add new properties to an object and print it in the console using the Object.defineProperty() method in JavaScript.

Output:

6
4
4
8
8

We have a complete list of Javascript Object methods, to check those please go through this JavaScript Object Complete Reference article.

Supported Browsers:

The browsers supported by Object.defineProperty() method are listed below:

• Google Chrome
• Firefox
• Opera
• Safari
• Edge