# Datatypes in Javascript

We all know that Data is piece of information that we often work with in any programming language. So each data has its own type. for ex:

```javascript
// below are the mostly repeated type of data in JS.
console.log('Nithin')
console.log(23)
console.log(true)
console.log(undefined)
console.log(null)

console.log([1,2,3])
console.log({name: 'ntihin', age:23})
```

So values in **JS** are can either be **primitive** or **non primitive** (**Objects**)

**Primitive Data types**

Primitive data types are string, number, boolean, undefined, null

**string:** sequence of characters. always must be within single or double quotes.  
**number:** Floating point numbers. even if u assign 23, compilers will automatically convert them to 23.0  
**boolean**: either true or false. always been used during decision making time.  
**undefined**: This datatype is being assigned implicitly when you declare a variable without assigning any value to it.  
**null**: its. a explicit value that you used initialize when u dont know the value initially?

```javascript
console.log('Nithin') // string
console.log(23)  // number
console.log(true) // boolean
console.log(undefined) // undefined
console.log(null) // null
```

**Non-primitive datatypes**  
Non-primitive data types are arrays, functions, objects literals, Date objects etc…

```javascript
const arr = [1, 2, 3, 4] // arrays

// functions
function greet() {
console.log('greeting')
}

greet()

console.log(new Date())

const user = {
fName: 'Nithin',
age: 23
}

console.log(user)
```