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jpfong/numberDaysInMonth.js

Last active November 8, 2017 21:40
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Get the number of days in a month
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numberDaysInMonth.js
// will return the last day of the month = the number of days in a month
function daysInMonth(anyDateInMonth) {
return new Date(anyDateInMonth.getFullYear(), anyDateInMonth.getMonth() + 1, 0).getDate();
}
let dayInNovember2017 = new Date(2017, 10, 1); // 2017-11-01
console.log(daysInMonth(dayInNovember2017)); // 30 days
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