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tri_inn
Level: Regular User
Registered: 26-08-2002
Posts: 395
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Two date compare by Javascript ?
suppose i have two date 10/02/2004 and 15/05/2004 and now i want to compare this two date
that which one is greater by javascript.how to do it.please provide sample code
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16-11-2004 at 07:24 AM |
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ashish12
Level: Trainee
Registered: 02-06-2005
Posts: 2
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Re: Two date compare by Javascript ?
quote:
tri_inn wrote:
suppose i have two date 10/02/2004 and 15/05/2004 and now i want to compare this two date
that which one is greater by javascript.how to do it.please provide sample code
<!-- TWO STEPS TO INSTALL VALIDATION (DATE):
1. Copy the coding into the HEAD of your HTML document
2. Add the last code into the BODY of your HTML document -->
<!-- STEP ONE: Paste this code into the HEAD of your HTML document -->
<HEAD>
<SCRIPT LANGUAGE="JavaScript">
<!-- Original: Mike Welagen (welagenm@hotmail.com) -->
<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->
<!-- Begin
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 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);
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 < 1) {
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;
}
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.");
}
}
// End -->
</script>
</HEAD>
<!-- STEP TWO: Copy this code into the BODY of your HTML document -->
<BODY>
<center>
<form>
<pre>
From date <input type=text name=from onBlur="checkdate(this)" size=11 maxlength=11>
To date <input type=text name=to onBlur="checkdate(this)" size=11 maxlength=11>
<input type=button name=formatbutton onClick="doDateCheck(this.form.from, this.form.to);" value="Check">
</pre>
</form>
</center>
<p><center>
<font face="arial, helvetica" size="-2">Free JavaScripts provided<br>
by <a href=" http://javascriptsource.com">The JavaScript Source</a></font>
</center><p>
<!-- Script Size: 4.34 KB -->
ashish pandey
____________________________
ashish
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02-06-2005 at 06:28 AM |
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vikrammandal
Level: Trainee
Registered: 11-08-2005
Posts: 2
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Re: Two date compare by Javascript ?
For those who are facing the same situation, here is a simple solution:
d1 = new Date(2005,12,15);
d2 = new Date(2005,12,25);
if (d1.getTime()<d2.getTime()) {
alert('d1 is less than d2');
}
cheers!!!
- Vikram
____________________________
- Vikram
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11-08-2005 at 10:48 AM |
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..but just in case u wanted it. 
