如何迭代并獲取子對象內(nèi)所有值的總和？在下面的示例中，我想添加所有.windowslet house = {  livingroom: { windows: 6, doors: 4 },  bedroom: { windows: 4, doors: 2 },  bathroom: { windows: 2, doors: 1 },  garden: { windows: 0, doors: 2 }}我也試過：Object.values(house).reduce(sum, curr => sum + curr));&let x += Object.values(house).forEach(sum => sum);