How to validate Html5 date in javascript as systemdate

Question

I have input type=date

<input type="Date" name="todate" id="to"> 

in HTML

How to validate the date to systemdate and before the current date it must be unavailable to click.I need to validate in Js Please provide answers

Answer 1

That is my solution, first change the following html tag:

 <input type="Date" name="todate" id="to"> 

To

 <input type="Date" name="todate" id="to" onchange="checkit(this)"> 

The javascript function as follow:

function checkit(v)
{
 var now=new Date();
 now.setHours(0);
 now.setMinutes(0);
 now.setSeconds(0);
 now.setMilliseconds(0);

 var userInput=new Date(v.value);
 userInput.setHours(0);
 userInput.setMinutes(0);
 userInput.setSeconds(0);
 userInput.setMilliseconds(0);
 if (userInput.getTime()<now.getTime())
 {
    alert("User input date OLDER current date");
 }
 else
 {
   alert("User input date NOT older current date");
 }
}