JAVASCRIPT TYPES AND VALUES EXPLAINED(Pitch)

Javascript is a dynamically typed language, which means variable types are identified at run time (done implicitly by the interpreter). As opposed to statically typed languages like Java and C++, where the developer have to explicitly define the type for each variable declared.

As a Javascript developer having a good understanding of types in Javascript, will give you an holistic view of the language and make you more confident as a Javascript developer.

GOAL

 
In this article readers will learn the following:

• The difference between a dynamic and static type language
• The difference between a type and a value in Javascript
• The primitive types and vallues
• The Object type
• Different Object properties
• Object property descriptor and attributes
• Built-in Javascript Objects
• The difference between Arrays and Typed Arrays (Indexed Collections)
• How primitive and reference values are copied
• How the Javascript stack and heap memory works with primitive and reference values

OUTLINE

• STATIC VS DYNAMIC TYPE LANGUAGE

• TYPE VS VALUE

• THE PRIMITIVE TYPES

  • undefined

  • null

  • Booleans

  • Strings

  • Numeric types

    • Number
    • Nan
    • Big Int

  • Symbol

• THE OBJECT TYPE

  • Object Properties
  • Object Property Descriptor And Attributes
  • Built-in Objects

• PRIMITIVE AND REFERENCE VALUES

  • Stack And Heap Memory
  • Copying Primitive Values
  • Copying Reference Values

• CONCLUSION

  • Summary Of The Article