[Lab] Javascript 大小事試試 --- object method 綜合練習

這裡就不囉嗦，直接放code做個記錄。

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 "magazine":
            this.add(4.99);
            break;
     
        case "chocolate":
            this.add(0.45);
            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);