Codecademy: Codeyear Foiled Again

//sample solution


function BankAccount( lastname ) {
    this.lastname = lastname;
    var balance = 1000000;
}

function attackBalance( account ) {
//note how undefined is treated like true or false, a reserved word
if(account.balance===undefined){
console.log("Can't attack");
} else {
account.balance = 5;
}
}