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JavaScript Methods
JavaScript methods are actions that can be performed on objects.

A JavaScript method is a property containing a function definition.

Property Value
firstName John
lastName Doe
age 50
eyeColor blue
fullName function() {return this.firstName + " " + this.lastName;}

Accessing Object Methods
You access an object method with the following syntax:

objectName.methodName()
You will typically describe fullName() as a method of the person object, and fullName as a property.

The fullName property will execute (as a function) when it is invoked with ().

This example accesses the fullName() method of a person object:

Example
name = person.fullName();
Adding a Method to an Object
Adding a new method to an object is easy:

Example
person.name = function () {
return this.firstName + " " + this.lastName;
};
Using Built-In Methods
This example uses the toUpperCase() method of the String object, to convert a text to uppercase:

let message = "Hello world!";
let x = message.toUpperCase();
The value of x, after execution of the code above will be:

HELLO WORLD!
Example
person.name = function () {
return (this.firstName + " " + this.lastName).toUpperCase();
};

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