> ## Documentation Index
> Fetch the complete documentation index at: https://blog.sumathi.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Data Types

> Text, title, and styling in standard markdown

## 7 Primitive Datatypes

* To store differnce types of data
  * Like storting differnce items like food, pens , mobiles in differnent boxes
  * You can put other items also in differnt box like keeping pens in mobile box
  * But this is not recommended
* ShortCut -> nn ss bb u

  * null
  * number
  * string
  * symbol
  * boolen
  * bigint
  * undefined

  ```js theme={null}
  //  nn bb ss u - Primitive DataTypes
  let a = null;
  let b = 345;
  let c = true; // other value is trye
  let d = BigInt("567");
  let e = "Harry"
  let f = Symbol("I am a Symbol");
  let g = undefined // same as let g
  console.log(a,b,c,d,e,f,g)
  console.log(typeof d)
  ```

## Objects or Non primitive DataTypes

* Objects or dictionaries in python are Non prmitive datatypes
  ```js theme={null}
  // Objects in Js - Non primitve DataTypes

  const item = {
      "Kalyan" : true,
      "Kiran" : false,
      "Rajendra" : 10,
      "Sumathi" : undefined
  }

  console.log(item["Kalyan"]) //value from dictionary
  console.log(item["Ka"]) // undefined
  // Objects Used for mapping items 
  ```