Javascript

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Javascript is a scripting language which was used for manipulating dom but now it becomes more powerful with different frameworks.

Javascript Data types:

1. Primitive Types

   In Primitive types the datas are stored as values in memory(Call by value) and are fixed in size

     - Boolean
     - Null
     - Undefined
     - Number
     - String
     - Symbol
   

2. Non-Primitive Type

   In Non-Primitive types the datas are stored in memory with its address and reference the value(Call by reference).It is not in fixed size

     -Objects
   

Boolean
It is either true or false
Example: var isOdd =true;

Null
In javascript null is an type where it as absence of any type.(i.e no memory was created for that particular value)
Example: var name=null;

Undefined
It means the variable with out any value.
Example:var name;

Number
In javascript both integer and floating values are assigned with 'Number' type
Example:var value1=5;/var value2=5.2

String
It is a combination of characters
Example:var greeting="hello";

Objects
In javascript objects are key and value pair
Example:var name={firstName:"john",
lastName:"doe"
}