踩坑参照:
https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/84304625
在vue中使用js实现日期联动时遇到过坑,所以正确获取n天前后的方法是:
Date curDate = new Date();
var preDate = new Date(curDate.getTime() - n*24*60*60*1000); //前n天
var nextDate = new Date(curDate.getTime() + n*24*60*60*1000); //后n天