create object notes

create-object-notes.js

const veryImportantInfo = {
    "socialSecurity": "934-11-0201",
    "bankAccountNumber": "4483271255",
    "bankRoutingNumber": "458979043"
}

const requestFunds = function (customerInfo) {
    // Note: Banks require that the account number and routing number be combined into a single value
    customerInfo.bankAccountNumber = customerInfo.bankAccountNumber + customerInfo.bankRoutingNumber
    const transactionInfo = customerInfo.bankAccountNumber

    // Awesome code that performs the transaction goes here...
}

requestFunds(veryImportantInfo)
console.log(veryImportantInfo.bankAccountNumber)   // 4483271255458979043 --> Yikes!




const safeImportantInfo = Object.create(null, {
    socialSecurity: {
        value: "934-11-0201",
        writable: false
    },
    bankAccountNumber: {
        value: "4483271255",
        writable: false
    },
    bankRoutingNumber: {
        value: "458979043",
        writable: false
    }
})

safeImportantInfo.socialSecurity = "haxx0r attack"
console.log(safeImportantInfo.socialSecurity)    // 934-11-0201  --> It didn't change!


var user = {
  sayHello: function() {
    console.log('Hello '+ this.name);
  }
};

var bob = Object.create(user, {
  'id' : {
    value: "444-66-7777",
    enumerable:true // writable:false, configurable(deletable):false by default
  },
  'name': {
    value: 'Bob',
    enumerable: true
  }
});

bob.sayHello();