I am looking for a code in javascript that ensures future da

Question

I am looking for a code in javascript that ensures future date validation.

e.g.If the date is 01/14/2014(format-MM/DD/YYYY) and if in the text field I try to give future date for example(01/27/2014),then it shuld give me an errori.e.

"Future date is not allowed."

I will be grateful if anybody could answer my question