I Have to Scan It More Than Once?


what's wrong with my code? does anybody knows? thank you for support

ReferenceError: quantity is not defined

var cashRegister = {
    add: function(itemCost){
        this.total += itemCost*quantity;
    scan: function(item, quantity) {
        switch (item) {
        case "eggs": this.add(0.98); break;
        case "milk": this.add(1.23); break;
        case "magazine": this.add(4.99); break;
        case "chocolate": this.add(0.45); break;

cashRegister.scan("eggs", 4);
cashRegister.scan("milk", 4);
cashRegister.scan("magazine", 4);
cashRegister.scan("chocolate", 4);

console.log('Your bill is '+cashRegister.total);


you added a quantity parameter to the scan method. this means the multiplication of item price times quantity should be done in your scan method, not your add method


thanks a lot! realize it