您需要修改click事件的prev和next计算.检查此小提琴(检查控制台以查看值).

You need to modify prev and next calculations on click events. Check this fiddle (Check the console to see the values).

使用setMonth()和getMonth()代替setDate()和getDate().另外，您可能需要调整/设置天"值才能获得准确的结果.

use setMonth() and getMonth() instead of setDate() and getDate(). Also you may need to adjust/set the Day value to get accurate results.

更新:这是更新的小提琴