Javascript datatypes

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In JavaScript, there are two sorts of data types -

• Primitive data type
• Non-primitive (reference) data type

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Primitive data type

Data Type	Description
Number	Integers or floating-point
String	Series of one or more charcters
Boolean	True or False
Undefined	Unassigned values
Null	Unknown values

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Non-primitive data type

Data Type	Description
Object	Key:value pairs
Array	Group of similar values

Lets take an example

let value = 16;                                 // Number
let name = "Vishal Torgal";                     // String
let obj = {empId:"1701", empLoc: "Atlanta"};    // Object

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JavaScript types are dynamic. For example

let val;           // Now val is undefined
val = "Torgal";    // Now val is a String
val = 5;           // Now val is a Number

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