week()

moment().week(Number);
moment().week(); // 数字
moment().weeks(Number);
moment().weeks(); // 数字

获取或设置年份的星期。

由于不同的语言环境对年份中的星期的编号的定义不同，因此 Moment.js 添加了 moment#week 以获取/设置年份的本地化星期。

年份的星期取决于哪一天是星期的第一天（星期日、星期一等），以及哪一周是年份的第一周。

例如，在美国，星期日是星期的第一天。 1 月 1 日所在的星期是年份的第一周。

在法国，星期一是星期的第一天，且 1 月 4 日是年份的第一周。

moment#week 的输出将会取决于 moment 的语言环境。

当设置年份的星期时，将会保留星期几。

moment().week(Number);
moment().week(); // Number
moment().weeks(Number);
moment().weeks(); // Number

Gets or sets the week of the year.

Because different locales define week of year numbering differently, Moment.js added moment#week to get/set the localized week of the year.

The week of the year varies depending on which day is the first day of the week (Sunday, Monday, etc), and which week is the first week of the year.

For example, in the United States, Sunday is the first day of the week. The week with January 1st in it is the first week of the year.

In France, Monday is the first day of the week, and the week with January 4th is the first week of the year.

The output of moment#week will depend on the locale for that moment.

When setting the week of the year, the day of the week is retained.