披萨订单 - 额外的奶酪

Question

我无法理解 JavaScript。我有以下任务。我正在尝试增加最终成本。额外的奶酪。

var extraCheeseUpcharge = 1.5
var extraCheese = confirm("Would you like extra cheese?")

if (extraCheese == true) {
  pizza.extraCheese =  true;
  extraCheese = extraCheeseUpcharge + pizza.cost;
} else {
   pizza.extraCheese =  false;
  extraCheese = extraCheeseUpcharge - pizza.cost;
  
}

Answer 1

var extraCheeseUpcharge = 1.5
var extraCheese = confirm("Would you like extra cheese?")

if (extraCheese == true) {
  pizza.extraCheese =  true;
  extraCheese = extraCheeseUpcharge + pizza.cost;
} else {
   pizza.extraCheese =  false;
  extraCheese = pizza.cost;
}

如果 extraCheese 为 false，此处的最终价格将等于 pizza.cost 而不是 extraCheeseUpcharge - pizza.cost