3. Short-Term Memory


#1


https://www.codecademy.com/courses/close-the-super-makert/0/3?curriculum_id=506324b3a7dffd00020bf661#


I try to run the code and I get the two following error messages:
ReferenceError: eggs is not defined
Oops, try again. Have you scanned eggs twice and magazine three times?

var cashRegister = {
    total: 0,
//insert the add method here    
    add: function (itemCost) {
        this.total += itemCost;
    },
    
    scan: function (item) {
        switch (item) { 
        case "eggs": 
            this.add(0.98); 
            break;
        
        case "milk": 
            this.add(1.23); 
            break;
        
        //Add other 2 items here
        case "chocolate":
            this.add(0.45);
            break;
        case "magazine":
            this.add(4.99);
            break;
        }
        return true;
    }
};

//Scan 2 eggs and 3 magazines
cashRegister.scan(eggs);
cashRegister.scan(eggs);
cashRegister.scan(magazine);
cashRegister.scan(magazine);
cashRegister.scan(magazine);
//Show the total bill
console.log('Your bill is '+cashRegister.total);


#2

cashRegister.scan(eggs);
cashRegister.scan(eggs);
cashRegister.scan(magazine);
cashRegister.scan(magazine);
cashRegister.scan(magazine);

why are eggs and magazines variables? Are you sure they should be variables?


#3

'x' is not defined - Referenceerror


#5

cashRegister.scan(eggs);
cashRegister.scan(eggs);
cashRegister.scan(magazine);
cashRegister.scan(magazine);
cashRegister.scan(magazine);

When you call your function (or your object method), you need to put quotes around "eggs" and "magazine". These are strings (text)--and without the quotes, they are interpreted as undefined variables.


#6

This topic was automatically closed 7 days after the last reply. New replies are no longer allowed.