////////////////**************OBJECTS IN JS **********////////////////////


//// singleton  (all constructors are singleton)


// object literals  are not singleton

const mySym = Symbol("key1")
 
const jsUser ={
    name: "hitesh", "full name": "Hitesh chaudhary",
    age: 18 ,
    [mySym] : "mykey1",
    location: "jaipur ",
    email: "den@gmail.com",
    isLoggedIn: false,
    lastLoginDays: ["monday","saturday"]
}

console.log(jsUser.email); //den@gmail.com
console.log(jsUser["email"]);//den@gmail.com
console.log(jsUser["full name"]);//Hitesh chaudhary
console.log(jsUser[mySym]);// mykey1


jsUser.email = "chatgpt@gmail.com " /// editing by just overriding it 
console.log(jsUser.email); //chatgpt@gmail.com 

// Object.freeze(jsUser); // it will lock all the value assinged 

 // function in js 
 jsUser.greeting = function() {
     console.log("hello js user");
 }
 
 console.log(jsUser.greeting()); // hello js user   
  console.log(jsUser.greeting); // [Function (anonymous)]
  
  
 jsUser.greeting2 = function() {
     console.log(`hello js user ${this.name}`);
 }
  console.log(jsUser.greeting2()); // hello js user hitesh
  console.log(jsUser.greeting2); // [Function (anonymous)]