How to list how many days for a month for a specific year?

Question

How to list how many days for a month for a specific year in JavaScript?

As we know 30 days have September, April, June, and November. All the rest have 31, Except February, Which has 28 days clear, And 29 in each leap year.

I would need take count of leap year. Do you know any native way to fond out.. or maybe a library.. could you suggest one?

Answer 1

This will work too assuming Jan=1, Feb=2 ... Dec=12

function daysInMonth(month,year) 
{
   return new Date(year, month, 0).getDate();
}

FIDDLE

Answer 2

try this

function daysInMonth(m, y)

{
  m=m-1; //month is zero based...
  return 32 - new Date(y, m, 32).getDate();
}

usage :

>> daysInMonth(2,2000) //29