bug in the date validation code with IE

[neetu]

There is an error in the below mentioned code which is used to check for the date
i. e when the date is entered ....the js code written checks if its a valid date or not.
it works fine with netscape ..but gives an error icon on the status bar for IE.

function checkdate(date_a)
{

var err = 0;
a = date_a.value;

if (a.length != 10) err = 1;

b1 = a.substring(0,2); //date
var b=parseInt(b1);

c = a.substring(2,3); //'-'

d1 = a.substring(3,5); //month
var d=parseInt(d1);

e = a.substring(5,6); //'-'

f1 = a.substring(6,10); //year
f = parseInt(f1);
if (isNaN(f)) alert("INVALID YEAR FORMAT - Enter in yyyy format"


//basic error checking

if (b < 1 || b > 31) alert(&quot;INVALID DAY ! PL Enter Date between 01 and 31&quot;
if (c != '-') alert(&quot;INVALID FORMAT ! Please enter a -(Hifen) after entering date&quot;
if (d < 1 || d > 12) alert(&quot;INVALID MONTH ! PL Enter Month between 1 and 12&quot;
if (e != '-') alert(&quot;INVALID FORMAT ! Please enter a -(Hifen) after entering month&quot;
if (f < 1900 || f > 9999) alert(&quot;INVLAID YEAR ! PL Enter Year between 1900 and 9999&quot;

//advanced error checking
//month with 30days

if (d == 4 || d == 6 || d == 9 || d ==11)
if (b >= 31)
alert(&quot;INVALID DAY ! Date entered must be within 31&quot;

//month = feb & leap year
if (d == 2)
{
g = f/4;

if (b > 29) alert(&quot;Wrong input ! Date entered must be within 30&quot;
if (b == 29)
if((f%100 == 0 || f%4 != 0) && (f%400 != 0))
alert(&quot;Wrong input ! A leap year cannot have the entered date&quot;
}

}

i accept the date as below in a form named f1 & check it by onchange( )

<input type=&quot;text&quot; size=&quot;11&quot; maxlength=&quot;11&quot; name=&quot;date&quot; onchange=&quot;checkdate(document.f1.date);&quot;>

 

[shmmeee]

This is the line that's causing your problems:

f1 = a.substring(6,10); //year

It's because you've also called your form f1. If you rename one of them then it should work.
Hope that's clear
regards,
Iain

 

[neetu]

thnx a million Iain !

it really worked....it shouldve striked me before...

but thnx anyways!!!!!

regards

neetu