How to access a property inside an object and use in another method? javascript

Question

I need to create a method to return a customers name and bank account value like so:

*bank.printAccount('Sheldon'); // this should print 'Sheldon account is 0'*

However I am struggling to find out how to access the property customers to use in a method printAccount. Currently I have this:

class Bank {
    constructor(){
        this.customers = {};
    }
  
  }
  Bank.prototype.addCustomer = function(customer){
       this.customers[customer] = 0;

  }
  Bank.prototype.printAccount = function(){
  

  };
  var bank = new Bank();
  bank.addCustomer('Sheldon');
  bank.addCustomer('Bob');

Answer 1

There you go:

class Bank {
  constructor() {
      this.customers = {};
  }
}
Bank.prototype.addCustomer = function(customer) {
     this.customers[customer] = 0;
}
Bank.prototype.printAccount = function(customer) {
     console.log(this.customers[customer])
};

var bank = new Bank();
bank.addCustomer('Sheldon');
bank.addCustomer('Bob');
bank.printAccount('Sheldon');
bank.printAccount('Bob');

You probably will need to add edge cases in printAccount() such as to check whether the customer exists or not.

Edit: Removed doubled initialization of customers.