从日期添加/减去日期不会正确地更改年/月 [英] Adding/Subtracting days from a date doesn't change the year/month correctly

问题描述

如果我的日期是 2011-01-02 ，我从那个日期减去 7 天应该给我 2010-12-26 ，而是给我 2011-01-26 ？

If I have a date that is 2011-01-02 and I subtract 7 days from that date it should give me 2010-12-26, but instead it gives me 2011-01-26?

请参阅以下链接以验证链接：

See the JS below to verify with link:

var date = new Date('2011','01','02');
alert('the original date is '+date);
var newdate = new Date(date);
newdate = newdate.setDate(newdate.getDate() - 7);
var nd = new Date(newdate);
alert('the new date is '+nd);

http://jsbin.com/upeyu/6

推荐答案

我想你打算这样做：（工作完美）

I think you meant to do this: (working perfectly)

var date = new Date('2011','01','02');
alert('the original date is '+date);
var newdate = new Date(date);
newdate.setDate(newdate.getDate() - 7);
var nd = new Date(newdate);
alert('the new date is '+nd);

jsFiddle例如

这篇关于从日期添加/减去日期不会正确地更改年/月的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！