Declare JavaScript Variables 
   Summary 
  - JavaScript provides eight different data types which are undefined,null,boolean,string,symbol,bigint,number, andobject.
- Variables allow computers to store and manipulate data in a dynamic fashion.
- Variables are defined by using varand the custom variable name (var ourName;). - Variable names can be made up of numbers, letters, and $ or _, but may not contain spaces or start with a number.
 
  Final Code 
 var myName;