check whether the date entered by the user is current date or the future date

Question

I was browsing through the net to find a javascript function which can check whether the date entered by the user is current date or the future date but i didn't found a suitable answer so i made it myself.Wondering If this can be achieved by one line code.

 function isfutureDate(value)      {         var now = new Date;     var target = new Date(value);      if (target.getFullYear() > now.getFullYear())      {         return true;     }     else if(target.getFullYear() == now.getFullYear())      {     if (target.getMonth() > now.getMonth()) {     return true;     }      else if(target.getMonth() == now.getMonth())     {     if (target.getDate() >= now.getDate()) {         return true;     }     else     {         return false     }     }       }     else{     return false;     } }    

Answer 1

You can compare two dates as if they were Integers:

var now = new Date(); if (before < now) {   // selected date is in the past } 

Just both of them must be Date.

First search in google leads to this: Check if date is in the past Javascript

However, if you love programming, here's a tip:

1. A date formatted like YYYY-MM-DD could be something like 28-12-2013.
2. And if we reverse the date, it is 2013-12-28.
3. We remove the colons, and we get 20131228.
4. We set an other date: 2013-11-27 which finally is 20131127.
5. We can perform a simple operation: 20131228 - 20131127

Enjoy.