Dynamically Create Javascript Classes

dynamic.js

function AccountFactory(name) {
  function AccountClass(accountNumber) {
    this.accountNumber = accountNumber;
  }

  AccountClass.getClassName = function() {
    return name + 'Account';
  };

  return AccountClass;
}

var CheckingAccount = AccountFactory('Checking');

var account = new CheckingAccount('123232');

console.log(CheckingAccount.getClassName());
console.log(account.accountNumber);