Data Type

primary data Types:8 (Two data Types-primitive data Types, Non primitive data Types)

i)primitive-Single values)
ii)nonprimitive -complex objects and collections of data

Primitive data types:
it is immutable. seven primitive data types
1)string:Textual data.(''),(""),(';-for template literals)
2)Number:integer
3)BigInt:arbitary precision(9007199254740991)
4)Boolean:true or false
5)null:initial absence of any value or object reference
6)undefined:represents variable but not assigned values.
7)symbol:To avoid naming conflicts.

primitive data types: if we want modifies a primitive value, new values are locatedd in a new memory location. the original values are unchanged.
(existing values)