var cname = "FormSubmitted" // name of the cookie
var data ="1"; // data to be stored(should not be null)
var cpath = ""; // path for which allowed [Optional]
var cdomain = ""; // domain for which allowed [Optional]
// Checks whether the cookie exists or not
// If it exists, it display a specified message on the page
function CheckForCookie()
{
if( ExistsCookie(cname) ) // If the cookie is found
{
// Show message
document.write(""
+"The Form has already been submitted!!"
+""
+"You have already submitted the form!!
"
+"You cannot submit this form again, until three months "
+"(since the day you first submitted it) have elapsed."
+"
Thank You for your interest.
"
+"");
}
}
// Checks whether the form should be submitted or not
// If the cookie exists, the form is not submitted
// if no cookie exists, a new cookie, set to expire after
// three months ,is written and the form is submitted
function CheckForm()
{
if( !ExistsCookie(cname) )
{
// Write a cookie set to expire after 90 days
now= new Date(); // get current date and time
expiry = new Date();
// Set expiry Date to 90 days from now
expiry.setTime((now.getTime() + 90*24*60*60*1000));
WriteCookie(cname,data,expiry,cpath,cdomain);
return true;
}
// The user has already clicked submit once
alert("You have already submitted this form");
return false;
}
// Writes the specified data to the cookie file
function WriteCookie(name,data,expiryDate,path,domain)
{
// The name and data arguments are compulsory
if( name==null || name=="" || data==null || data=="")
{
alert("You must provide both name & data values.");
return false;
}
var Cookie = name + "=" + escape(data)
+((expiryDate)?"; expires="+expiryDate.toGMTString():"")
+ ((path)? "; path=" + path : "" )
+ ((domain)?"; domain=" + domain : "" );
//Set cookie
document.cookie = Cookie;
return true;
}
//Checks if the specified cookie exists or not
function ExistsCookie(name)
{
// cookies are separated by semicolons
var aCookie = document.cookie.split("; ");
for (var i=0; i < aCookie.length; i++)
{
// a name/value pair is separated by an = sign
var aCrumb = aCookie[i].split("=");
if (name == aCrumb[0])
return true;
}
// a cookie with the requested name does not exist
return false;
}