data types

 1.primitive data types

   int char number null undefined

 2. non primitive

   array, js object(just like a dictionary)

 let number=12;

console.log(number);

let array=[1,2,3,4]

console.log("hi array type is "+ typeof array)

let object={

ram:21,

sita:34,

gita:41

}

console.log(object)

console.log(typeof object)