javascript - 在 moment js 中按给定日期确定一周的第一天

Question

我想在 Moment.js 中根据给定日期确定一周的第一天。这是我的代码:

var begin = moment("2015-08-15").startOf('week').isoWeekday(0);
console.log(begin);
var end = moment("2015-08-15").endOf('week').isoWeekday(0);
console.log(end);

我得到以下输出:

Object { _isAMomentObject: true, _i: "2015-08-15", _f: "YYYY-MM-DD", _isUTC: false, _pf: Object, _locale: Object, _d: Date 2015-08-01T22:00:00.000Z }
Object { _isAMomentObject: true, _i: "2015-08-15", _f: "YYYY-MM-DD", _isUTC: false, _pf: Object, _locale: Object, _d: Date 2015-08-09T21:59:59.999Z }

根据文档，本地默认为“en”，这意味着一周的第一天是星期日。在我看来正确的结果应该是:

begin = 2015-08-09
end = 2015-08-15

当我将 isoWeekday 从“0”更改为“1”时，结果如下所示:

Object { _isAMomentObject: true, _i: "2015-08-15", _f: "YYYY-MM-DD", _isUTC: false, _pf: Object, _locale: Object, _d: Date 2015-08-02T22:00:00.000Z }
Object { _isAMomentObject: true, _i: "2015-08-15", _f: "YYYY-MM-DD", _isUTC: false, _pf: Object, _locale: Object, _d: Date 2015-08-10T21:59:59.999Z }

这也是错误的。正确答案是:

begin = 2015-08-10
end = 2015-08-16

Answer 1

正确答案是:

var begin = moment().subtract(1, 'week').startOf('week').format("YYYY MM DD");
var end = moment().subtract(1, 'week').endOf('week').format("YYYY MM DD");

感谢@MattJohnson 的帮助