Moment.js moment().isoWeek()用法及代码示例

moment().isoWeek()方法用于获取或设置Moment对象的ISO周。 ISO week-numbering 系统在其系统中考虑闰周。这使得它只有 52 或 53 整周。这是通过将天数考虑为 364 或 371 天而不是 365 或 366 天来实现的。这使得该方法返回相同的日期，无论其区域设置如何。

用法:

moment().isoWeek( Number );

参数：该方法接受如上所述和如下所述的单个参数：

Number:这是必须为 Moment 对象设置的 ISO 周。它是一个可选参数。

返回值：此方法返回当前 ISO 周的时刻。

注意：这在普通的 Node.js 程序中不起作用，因为它需要全局安装或在项目目录中安装外部moment.js 库。

Moment.js 可以使用以下命令安装：

moment模块的安装：

npm install moment

以下示例将演示 Moment.js moment().isoWeek() 方法。

示例 1：

Javascript


const moment = require('moment'); 
  
console.log("Current Date:", moment().toString()) 
console.log("Current isoWeek is:", moment().isoWeek()) 
  
let isoWeek1 = moment().isoWeek(1); 
console.log( 
    "Moment with isoWeek of 1 is:", 
    isoWeek1.toString() 
) 
  
let isoWeek40 = moment().isoWeek(40); 
console.log( 
    "Moment with isoWeek of 40 is:", 
    isoWeek40.toString() 
)

输出：

Current Date: Wed Jul 13 2022 01:12:39 GMT+0530
Current isoWeek is: 28
Moment with isoWeek of 1 is: Wed Jan 05 2022 01:12:39 GMT+0530
Moment with isoWeek of 40 is: Wed Oct 05 2022 01:12:39 GMT+0530

示例 2：在此示例中，我们将看到 ISO 周不受 Moment 区域设置的影响，因此一周的所有日期都是相同的。

Javascript


const moment = require('moment'); 
  
let isoWeek1en = moment().locale('en').isoWeek(1); 
console.log( 
    "Moment with isoWeek of 1 with locale 'en' is:", 
    isoWeek1en.toString() 
) 
  
let isoWeek1br = moment().locale('br').isoWeek(1); 
console.log( 
    "Moment with isoWeek of 1 with locale 'br' is:", 
    isoWeek1br.toString() 
) 
  
let isoWeek1in = moment().locale('in').isoWeek(52); 
console.log( 
    "Moment with isoWeek of 52 with locale 'in' is:", 
    isoWeek1in.toString() 
) 
  
let isoWeek1fr = moment().locale('fr').isoWeek(52); 
console.log( 
    "Moment with isoWeek of 52 with locale 'fr' is:", 
    isoWeek1fr.toString() 
)

输出：

Moment with isoWeek of 1 with locale ‘en’ is: Wed Jan 05 2022 01:12:39 GMT+0530
Moment with isoWeek of 1 with locale ‘br’ is: Wed Jan 05 2022 01:12:39 GMT+0530
Moment with isoWeek of 52 with locale ‘in’ is: Wed Dec 28 2022 01:12:39 GMT+0530
Moment with isoWeek of 52 with locale ‘fr’ is: Wed Dec 28 2022 01:12:39 GMT+0530

参考： https://momentjs.com/docs/#/get-set/iso-week/

相关用法

注：本文由纯净天空筛选整理自sayantanm19大神的英文原创作品 Moment.js moment().isoWeek() Method。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。