Check if a date is valid

[Captain Proton]

Say I have three variables: month, year and day. How do I check whether they form a valid date, i.e. not "Februrary 31 1999"?

[DarkMonkey]

This isn't an answer but hello Mr. Proton. It's a small world.

[Captain Proton]

wtf? What does that have to do with my question?

Oh wait, hi Ninconvert!

[Maelstrom]

Well this is something I have been thinking about. The Date object allows you to pass parameter that equal a date.

So if you pass the string entered in the form to the date object it will return either NaN or another error.

var someDate=new Date("sept 22,0")

hat would be an error...
Play around with that...

Maelstrom

[Captain Proton]

Thanks, but I already found something.

By the way, what is this NaN anyway?

[Maelstrom]

Not a Number...it is a error point like when something returns false of -1