Moment.js moment.duration().months() 方法
moment().duration().months() 方法用于获取持续时间的月份。该方法返回一个介于0和11之间的值。
该方法与 asMonths() 方法不同,后者返回给定持续时间的月数的长度。
语法:
moment().duration().months();
参数: 该方法不接受任何参数。
返回值: 该方法返回持续时间的月份(0-11)。
注意: 这在普通的Node.js程序中不能工作,因为它需要全局安装或在项目目录中安装外部的moment.js库。
可以使用以下命令安装Moment.js:
安装Moment模块:
npm install moment
下面的示例将演示 Moment.js moment.duration().months() 方法。
示例1:
const moment = require('moment');
// Example 1
let durationOne = moment.duration(9, 'months');
let durationTwo = moment.duration(19, 'months');
// This returns 9 as it would be the 9th month
// in the first year of the duration
console.log(
"durationOne months is:", durationOne.months()
)
// This returns 7 as it would be the 7th month
// in the second year of the duration
console.log(
"durationTwo months is:", durationTwo.months()
)
输出:
durationOne months is: 9
durationTwo months is: 7
示例2: 通过这个示例,可以更好地理解这种方法与asMonths()方法的区别。
const moment = require('moment');
let durationA = moment.duration(50, 'weeks');
let durationB = moment.duration(64, 'weeks');
// The asMonths() method will return a value
// of the actual number of months of the duration
console.log(
"Length of durationA in months is:",
durationA.asMonths()
)
// The months() method will return the
// month of the duration
// It can be denoted as floor(numberOfMonths % 12)
console.log(
"durationA months is:", durationA.months()
)
console.log(
"Length of durationB in months is:",
durationB.asMonths()
)
console.log(
"durationB months is:", durationB.months()
)
输出:
Length of durationA in months is: 11.499209429351732
durationA months is: 11
Length of durationB in months is: 14.718988069570218
durationB months is: 2
参考: https://momentjs.com/docs/#/durations/months/