JavaScript - Objects - defineProperty

The below code demonstrates usage of defineProperty in JS:

var BankAccount = {
    cash: 12000,
    _name:"Default",
    withdraw: function(amount){
      this.cash -= amount;
      console.log('Withdrew '+ amount + ', new cash reserve is: '+ this.cash);
    }
};


//BankAccount.withdraw(1000);


Object.defineProperty(BankAccount, 'deposit',{
   value: function(amount) {
     this.cash += amount;
   }
});


BankAccount.deposit(3000);
BankAccount.withdraw(1000);

/*
Object.defineProperty(BankAccount, 'name',{
  value : 'ID000-1',
  writable: true 
  // by default, properties created using defineProperty = readOnly
});


console.log(BankAccount.name);
*/
BankAccount.name = 'Sandra';
console.log(BankAccount.name);


Object.defineProperty(BankAccount,'name',{
  get: function() {
  return this._name;
}  ,
 set: function(name) {
   this._name=name;
 }
  })

  

BankAccount.name = 'Cassandra';

console.log(BankAccount.name);

Practice at:
http://jsbin.com