Data Types js

Dataypes.js

/* Data Types:
Undefined, null, booleans, String, Symbols, number, and objects;
*/
/*
Symbols: Symbols are immutable and are unique
*/
const val1 = Symbol("Hello")
const val2 = Symbol("Hello")

console.log(val1 == val2) //false

/* 
var : The most common variable. Can be reassigned but only accessed within a function. Variables defined with var move to the top when code is executed.
*/
var myname  = "Raza Khan";
console.log(myname)

myname = 8
console.log(myname)
/*
let : Similar to const, however, let variable can be reassigned but not re-declared.
*/
let ourName = "UraniumMobile";
/*
const : Cannot be reassigned and not accessible before they appear within the code. 
*/
const pi = 3.14
/*
Objects
*/
var person = {
    "name" : myname,
    "age" : 18,
    "Expertise"  : "Flutter Developer",
    "Profession" : "Freelancer"
}
/*
Arrays
*/

var fruits = ["Apple", "Mango", "🍌"]