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Discussion Topic: checking the date less current date using jsp

ctman10

12-17-2005 @ 12:29 AM

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Posts: 12
Joined: Dec 2005

i have a problem tu edit this prg when user input the date lee than today so the prompt meg will appear auto 'user cannot enter value less than today'.
please someone help me with this coding

function checkdate(objName)
{

  var datefield = objName;
  if (chkdate(objName) == false )
  {
    datefield.select();
    alert("That date is invalid!!!.  Please try again.");
    datefield.focus();
    return false;
  }
  else
  {
    return true;
  }
}

function chkdate(objName) {
var currentDate = new Date();
a=currentDate.getYear();
b=currentDate.getMonth();
c=currentDate.getDate();
//var strDatestyle = "US"; //United States date style
var strDatestyle = "EU";  //European date style
var strDate;
var strDateArray;
var strDay;
var strMonth;
var strYear;
var intday;
var intMonth;
var intYear;
var booFound = false;
var datefield = objName;
var strSeparatorArray = new Array("-"," ","/",".");
var intElementNr;
var err = 0;
var strMonthArray = new Array(12);
d = (c - intday);
strMonthArray[0] = "Jan";
strMonthArray[1] = "Feb";
strMonthArray[2] = "Mar";
strMonthArray[3] = "Apr";
strMonthArray[4] = "May";
strMonthArray[5] = "Jun";
strMonthArray[6] = "Jul";
strMonthArray[7] = "Aug";
strMonthArray[8] = "Sep";
strMonthArray[9] = "Oct";
strMonthArray[10] = "Nov";
strMonthArray[11] = "Dec";
strDate = datefield.value;

if (strDate.length < 6)
{
  if (strDate.length >=1)
  {
alert("That date is invalid.  Please try again.");
datefield.select();
datefield.focus();
  }
  return true;
}

for (intElementNr = 0; intElementNr < strSeparatorArray.length; intElementNr++)
{
  if (strDate.indexOf(strSeparatorArray[intElementNr]) != -1)
  {
strDateArray = strDate.split(strSeparatorArray[intElementNr]);
if (strDateArray.length != 3)
{
err = 1;
return false;
}
else
{
strDay = strDateArray[0];
strMonth = strDateArray[1];
strYear = strDateArray[2];
}
booFound = true;
}
}
if (booFound == false)
{
  if (strDate.length>5)
  {
strDay = strDate.substr(0, 2);
strMonth = strDate.substr(2, 2);
strYear = strDate.substr(4) ;
  }
}
if (strYear.length == 2)
{
  strYear = '20' + strYear;
}

// US style
if (strDatestyle == "US")
{
  strTemp = strDay;
  strDay = strMonth;
  strMonth = strTemp;
}

intday = parseInt(strDay, 10);

if (isNaN(intday))
{
  err = 2;
  return false;
}
intMonth = parseInt(strMonth, 10);
if (isNaN(intMonth))
{
  for (i = 0;i<12;i++)
  {
if (strMonth.toUpperCase() == strMonthArray.toUpperCase())
{
intMonth = i+1;
strMonth = strMonthArray;
i = 12;
}
  }
  if (isNaN(intMonth))
  {
err = 3;
return false;
  }
}
intYear = parseInt(strYear, 10);
if (isNaN(intYear))
{
  err = 4;
  return false;
}
if (intMonth>12 || intMonth<1)
{
  err = 5;
  return false;
}
if ((intMonth == 1 || intMonth == 3 || intMonth == 5 || intMonth == 7 || intMonth == 8 || intMonth == 10 || intMonth == 12) && (intday > 31 || intday < 1))
{
  err = 6;
  return false;
}
if ((intMonth == 4 || intMonth == 6 || intMonth == 9 || intMonth == 11) && (intday > 30 || intday < 1))
{
  err = 7;
  return false;
}
if (intMonth == 2)
{
  if (intday < 1)
  {
err = 8;
return false;
  }
  if (LeapYear(intYear) == true)
  {
if (intday > 29)
{

err = 9;
return false;
}
  }
  else
  {
if (intday > 28)
{
err = 10;
return false;
}
  }
}
if (strDatestyle == "US")
{
  datefield.value = strMonthArray[intMonth-1] + " " + intday+" " + strYear;
}
else
{
  datefield.value = intday + " " + strMonthArray[intMonth-1] + " " + strYear;
}

if (intYear < a )
{
     alert("The date is invalid1")
     return false;
}
else
if (intYear >= a )
{
     if (intMonth > b)
     {
          //alert("the date invalid 123344")
          return true;
     }
     else
     if (intMonth = b)
     {
          return true;

     }
     else
          {
          alert("the date invalid 1233344444")
          return false;
          }

     //return true;
}

return true;
}

function LeapYear(intYear)
{
  if (intYear % 100 == 0) {
  if (intYear % 400 == 0) { return true; }
}
else
{
  if ((intYear % 4) == 0) { return true; }
}

return false;
}

function doDateCheck(from, to)
{
if (Date.parse(from.value) <= Date.parse(to.value))
{
alert("The dates are valid.");
}
else
{
if (from.value == "" || to.value == "")
alert("Both dates must be entered.");
else
alert("To date must occur after the from date.");
}
}

ct

This message was edited by ctman10 on 12-19-05 @ 5:44 AM