Javascript Date Validation (Range)

Is it possible through Jquery/Javascript that I can validate a date with the following conditions

example date : 10/10/2011

Conditions : Not in the past (accept today onwards) Not more than 18 months (this can be variable)

Because the ways I found out was

var e = new Date();         开发者_开发百科         
Alert(e.getMonth() + 2);

but this is not what I wanted

you might want to have a look at date.js

it's a great library for manipulating dates in javascript.

http://www.datejs.com/

here's the documentation:

http://code.google.com/p/datejs/wiki/APIDocumentation

it can also do the comparisons for you!

have a look at Date.compare and Date.addMonths

You can use JQuery's Datepicker, it has validation included and is pretty nice overall.

It can be done like this:

var toValidate = new Date('10/10/2011');
var months = 18;

var now = new Date();
var minDate = new Date(now.getFullYear(), now.getMonth(), now.getDate());
var maxDate = new Date(now.getFullYear(), now.getMonth() + months, now.getDate());

var valid = minDate < toValidate && toValidate < maxDate;