• It refers to the programming paradigm of providing scope to the identifiers like name of types, functions, variables, etc. to prevent collisions between them.
• The same variable name might be required in a program in different contexts for instance.
• A group of related elements that each have a unique name or identifier is known as Namespace.
• Namespaces are used in many areas of computing, such as, file paths,  domain names and XML
• Using namespaces in such a scenario will isolate these contexts such that the same identifier can be used in different namespaces.
• By default, JavaScript does not provide namespace.
• It can contain all variables and functions however we replicate this functionality by making a global object.

Syntax:

• Namespace to initialize an empty space.

var <namespace> = {};

• Namespace to access variable.

<namespace>.<identifier>

For example,

Output