JavaScript gets the number of days for a month (JS month, days of the month)

Goal: Get 2014/April days

The code is as follows	Copy Code
Construct a Date object: var day = new Date (2014,4,0); Get days: var daycount = Day.getdate ();

In addition give this example again

code is as follows	copy code
//Method two function Daynumofmonth (year,month) {     month--;     var d = new Date (year) month,1);     d.setdate (D.getdate () +32-d.getdate ());     return (32-d.getdate ()); } //Method three function Daynumofmonth (year,month) {     return 32-new Data (Year,month, GetData (); }