A variable in JavaScript is used to a store data value that may be changed later on. It is essentially a name of storage location. There are two types of variables in JavaScript, and those include; local variable and global variable.
Three rules to follow when declaring a JavaScript variable:
- Name must start with a letter (a-z or A-Z), underscore( _ ), or dollar( $ ) sign.
- After the first letter, use digits (0-9)
- JavaScript variables are case sensitive (i.e: a and A are different variables because one is lowercase, and the other is uppercase)
A local variable in JavaScript is declared within a block or function, and is only accessible within that function or block.
A global variable in JavaScript is accessible from any function.
You can declare a variable in JavaScript using “var“, “const“, or “let“.




A Digital Platform is a software-based online framework that facilitates interactions between its users. The main goal in using Digital Platforms is to enhance the collaboration between producers and end-users. Digital Platforms can help businesses identify new business opportunities and future trends. 
The goal of CRM is to improve business relationships in order to increase the growth of your business. CRM may be used to form better relationships with customers, personalize customer communication, and improve overall customer satisfaction and service. CRM helps companies and organizations build brand loyalty, find new potential customers, build stronger customer relationships, and helps identify new leads easily.
fora company or organization by improving and managing how company resources are utilized. ERP software allows companies to manage, store, and use data regarding their daily processes.