///////////////stack and heap memory in js////////////////////
 
 //// STACK MEMORY(PRIMITIVE USED ) 
 let myYotubename ="hitensh" 
 let anothername = myYotubename //value assinged 
 anothername="chaiorcode"//value updates 
 
 /// copy is returning
 console.log(myYotubename);//hitensh  
console.log(anothername);//chaiorcode
 
 
 
 
 //////// HEAP (NON PRIMITIVE USED)
 
let UserOne = {
    email: "oldgmail.com",
    upi: "user@ybl"
}
let UserTwo = UserOne 

UserTwo.email ="new22gmail.com"

console.log(UserOne.email); /// new22gmail.com
console.log(UserTwo.email);/// new22gmail.com