Moment.js moment.duration().weeks()方法
moment().duration().weeks()方法是用来获取持续时间的周数。这个周数是作为天数的一个子集来计算的,因此其数值在0到4之间。计算每个星期的天数长度为7天。
这个方法与asWeeks()方法 不同,asWeeks()方法 返回给定期限的周数长度。
语法。
moment().duration().weeks();
参数。此方法不接受任何参数。
返回值。该 方法返回持续时间的周数(0-4)。
注意: 这在正常的Node.js程序中不会工作,因为它需要在全局或项目目录中安装一个外部的moment.js库。
Moment.js可以用以下命令来安装。
安装moment模块。
npm install moment
下面的例子将演示Moment.js moment.duration().weeks() 方法。
例子1:
Javascript
const moment = require('moment');let durationOne = moment.duration(3,'weeks');let durationTwo = moment.duration(6,'weeks');// This returns 3 as it would be the 3rd week// in the first month of the durationconsole.log("durationOne Weeks is:", durationOne.weeks())// This returns 1 as it would be the 1st week// in the second month of the durationconsole.log("durationTwo Weeks is:", durationTwo.weeks()) |
输出。
durationOne Weeks is: 3
durationTwo Weeks is: 1
例子2: 这个例子将有助于理解这个方法与asWeeks()的区别,以便更好地理解。
Javascript
const moment = require('moment');let durationA = moment.duration(30,'days');let durationB = moment.duration(38,'days');// The asWeeks() method will return a value// of the actual number of weeks of the durationconsole.log("Length of durationA in weeks is:",durationA.asWeeks())// The weeks() method will return// the week of the duration// It can be denoted as floor(numberOfWeeks % 4)console.log("durationA Weeks is:", durationA.weeks())console.log("Length of durationB in weeks is:",durationB.asWeeks())console.log("durationB Weeks is:", durationB.weeks()) |
输出。
Length of durationA in weeks is: 4.285714285714286
durationA Weeks is: 4
Length of durationB in weeks is: 5.428571428571429
durationB Weeks is: 1