使用 Moment.js 获取当前月份的天数

如何使用 Moment.js 获取当前月份的天数? 最好不要使用临时变量。

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最佳答案

Moment has a daysInMonth function:

Days in Month 1.5.0+
moment().daysInMonth();
Get the number of days in the current month.
moment("2012-02", "YYYY-MM").daysInMonth() // 29
moment("2012-01", "YYYY-MM").daysInMonth() // 31

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You can get the days in an array

Array.from(Array(moment('2020-02').daysInMonth()).keys())
//=> [0, 1, 2, 3, 4, 5...27, 28]


Array.from(Array(moment('2020-02').daysInMonth()), (_, i) => i + 1)
//=> [1, 2, 3, 4, 5...28, 29]

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To return days in an array you can also use

Array.from({length: moment('2020-02').daysInMonth()}, (x, i) => moment().startOf('month').add(i, 'days').format('DD'))


// ["01","02","03", "04", ... "28","29"]

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MomentJS can list days of the months.

const daysofThisMonth = Array.from(Array(moment().daysInMonth()), (_, i) => i + 1);
console.log(daysofThisMonth);

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