ActionScript 3 Working with Date and Time Number of days in the specified month
Example
/**
* @param year Full year as int (ex: 2000).
* @param month Month as int, zero-based (ex: 0=January, 11=December).
*/
function daysInMonth(year:int, month:int):int {
return (new Date(year, ++month, 0)).date;
}
