1. <HTML>
<HEAD>
<TITLE>The JavaScript Source: Math Related: Date Difference</TITLE>
<META HTTP-EQUIV="The JavaScript Source" CONTENT = "no-cache">
<META NAME="date" CONTENT="2000-09-09">
<META NAME="channel" CONTENT="Web Developer">
<META NAME="author" CONTENT="Ronnie T. Moore">
<META NAME="section" CONTENT="Math Related">
<META NAME="description" CONTENT="Enter two dates (including the time!) and
this script will display the number of weeks, days, hours, minutes, and seconds
between the two. The seconds field is optional, too. For an example, try
entering your birthdate and compare it to today's date.">
<SCRIPT LANGUAGE="JavaScript">
<!-- Original: Ronnie T. Moore -->
<!-- Web Site: The JavaScript Source -->
<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->
<!-- Begin
function isValidDate(dateStr) {
// Date validation function courtesty of
// Sandeep V. Tamhankar (stamhankar@hotmail.com) -->
// Checks for the following valid date formats:
// MM/DD/YY MM/DD/YYYY MM-DD-YY MM-DD-YYYY
var datePat = /^(d{1,2})(/|-)(d{1,2})2(d{4})$/; // requires 4 digit year
var matchArray = dateStr.match(datePat); // is the format ok?
if (matchArray == null) {
alert(dateStr + " Date is not in a valid format.")
return false;
}
month = matchArray[1]; // parse date into variables
day = matchArray[3];
year = matchArray[4];
if (month < 1 || month > 12) { // check month range
alert("Month must be between 1 and 12.");
return false;
}
if (day < 1 || day > 31) {
alert("Day must be between 1 and 31.");
return false;
}
if ((month==4 || month==6 || month==9 || month==11) && day==31) {
alert("Month "+month+" doesn't have 31 days!")
return false;
}
if (month == 2) { // check for february 29th
var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0));
if (day>29 || (day==29 && !isleap)) {
alert("February " + year + " doesn't have " + day + " days!");
return false;
}
}
return true;
}
function isValidTime(timeStr) {
// Time validation function courtesty of
// Sandeep V. Tamhankar (stamhankar@hotmail.com) -->
2. // Checks if time is in HH:MM:SS AM/PM format.
// The seconds and AM/PM are optional.
var timePat = /^(d{1,2}):(d{2})(:(d{2}))?(s?(AM|am|PM|pm))?$/;
var matchArray = timeStr.match(timePat);
if (matchArray == null) {
alert("Time is not in a valid format.");
return false;
}
hour = matchArray[1];
minute = matchArray[2];
second = matchArray[4];
ampm = matchArray[6];
if (second=="") { second = null; }
if (ampm=="") { ampm = null }
if (hour < 0 || hour > 23) {
alert("Hour must be between 1 and 12. (or 0 and 23 for military time)");
return false;
}
if (hour <= 12 && ampm == null) {
if (confirm("Please indicate which time format you are using. OK = Standard
Time, CANCEL = Military Time")) {
alert("You must specify AM or PM.");
return false;
}
}
if (hour > 12 && ampm != null) {
alert("You can't specify AM or PM for military time.");
return false;
}
if (minute < 0 || minute > 59) {
alert ("Minute must be between 0 and 59.");
return false;
}
if (second != null && (second < 0 || second > 59)) {
alert ("Second must be between 0 and 59.");
return false;
}
return true;
}
function dateDiff(dateform) {
date1 = new Date();
date2 = new Date();
diff = new Date();
if (isValidDate(dateform.firstdate.value) &&
isValidTime(dateform.firsttime.value)) { // Validates first date
date1temp = new Date(dateform.firstdate.value + " " + dateform.firsttime.value);
date1.setTime(date1temp.getTime());
}
else return false; // otherwise exits
if (isValidDate(dateform.seconddate.value) &&
isValidTime(dateform.secondtime.value)) { // Validates second date
date2temp = new Date(dateform.seconddate.value + " " +
dateform.secondtime.value);
date2.setTime(date2temp.getTime());
}
else return false; // otherwise exits
3. // sets difference date to difference of first date and second date
diff.setTime(Math.abs(date1.getTime() - date2.getTime()));
timediff = diff.getTime();
weeks = Math.floor(timediff / (1000 * 60 * 60 * 24 * 7));
timediff -= weeks * (1000 * 60 * 60 * 24 * 7);
days = Math.floor(timediff / (1000 * 60 * 60 * 24));
timediff -= days * (1000 * 60 * 60 * 24);
hours = Math.floor(timediff / (1000 * 60 * 60));
timediff -= hours * (1000 * 60 * 60);
mins = Math.floor(timediff / (1000 * 60));
timediff -= mins * (1000 * 60);
secs = Math.floor(timediff / 1000);
timediff -= secs * 1000;
dateform.difference.value = weeks + " weeks, " + days + " days, " + hours + "
hours, " + mins + " minutes, and " + secs + " seconds";
return false; // form should never submit, returns false
}
// End -->
</script>
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<A HREF="./" TARGET="_top"><font color="#FF0000"><b>Math Related</b></font></A>
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border=0 alt="}">
<FONT COLOR="#006666"><b>Date Difference</b></font></font>
<BR>
<BR>
<table BORDER=0 WIDTH=486 CELLPADDING=3 CELLSPACING=0>
<tr><td><font FACE="helvetica,arial,geneva">
<br>
<br>
<!-- Description --><!--content_start-->
Enter two dates (including the time!) and this script will display the number
of weeks, days, hours, minutes, and seconds between the two. The seconds field
is optional, too. For an example, try entering your birthdate and compare it to
today's date.
<hr>
</td></tr>
</table>
<!-- Demonstration -->
<center>
<form onSubmit="return dateDiff(this);">
<table>
<tr><td>
<pre>
First Date: Date: <input type=text name=firstdate value="" size=10
maxlength=10> (MM/DD/YYYY format)
Time: <input type=text name=firsttime value="" size=10
maxlength=10> (HH:MM:SS format)
Second Date: Date: <input type=text name=seconddate value="" size=10
maxlength=10> (MM/DD/YYYY format)
Time: <input type=text name=secondtime value="" size=10
maxlength=10> (HH:MM:SS format)
<center><input type=submit value="Calculate Difference!">
11. Date Difference:<br>
<input type=text name=difference value="" size=60>
</center>
</pre>
</td></tr>
</table>
</form>
</center>
<P>
<P>
<a name="source">
<table BORDER=0 WIDTH=486 CELLPADDING=3 CELLSPACING=0>
<tr><td BGCOLOR=yellow><font FACE="helvetica,arial,geneva"><b>The JavaScript
Source: Math Related: Date Difference</b>
<p>Simply click inside the window below, use your cursor to highlight the
script, and copy (type Control-c or Apple-c) the script into a new file in your
text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s).
The script is yours!!!
<br><br></font></td></tr>
<tr><td BGCOLOR=yellow ALIGN=CENTER>
<form NAME="copy">
<DIV align="center">
<input type=button value="Highlight All"
onClick="javascript:this.form.txt.focus();this.form.txt.select();"> &
nbsp;
<INPUT TYPE="text" NAME="total" VALUE="Script Size: 5.13 KB" size=24>
</DIV>
<textarea NAME="txt" ROWS=20 COLS=75 WRAP=VIRTUAL>
<!-- TWO STEPS TO INSTALL DATE DIFFERENCE:
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: Ronnie T. Moore -->
<!-- Web Site: The JavaScript Source -->
<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->
<!-- Begin
function isValidDate(dateStr) {
// Date validation function courtesty of
// Sandeep V. Tamhankar (stamhankar@hotmail.com) -->
// Checks for the following valid date formats:
// MM/DD/YY MM/DD/YYYY MM-DD-YY MM-DD-YYYY
var datePat = /^(d{1,2})(/|-)(d{1,2})2(d{4})$/; // requires 4 digit year
var matchArray = dateStr.match(datePat); // is the format ok?
if (matchArray == null) {
alert(dateStr + " Date is not in a valid format.")
return false;
}
month = matchArray[1]; // parse date into variables
12. day = matchArray[3];
year = matchArray[4];
if (month < 1 || month > 12) { // check month range
alert("Month must be between 1 and 12.");
return false;
}
if (day < 1 || day > 31) {
alert("Day must be between 1 and 31.");
return false;
}
if ((month==4 || month==6 || month==9 || month==11) && day==31) {
alert("Month "+month+" doesn't have 31 days!")
return false;
}
if (month == 2) { // check for february 29th
var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0));
if (day>29 || (day==29 && !isleap)) {
alert("February " + year + " doesn't have " + day + " days!");
return false;
}
}
return true;
}
function isValidTime(timeStr) {
// Time validation function courtesty of
// Sandeep V. Tamhankar (stamhankar@hotmail.com) -->
// Checks if time is in HH:MM:SS AM/PM format.
// The seconds and AM/PM are optional.
var timePat = /^(d{1,2}):(d{2})(:(d{2}))?(s?(AM|am|PM|pm))?$/;
var matchArray = timeStr.match(timePat);
if (matchArray == null) {
alert("Time is not in a valid format.");
return false;
}
hour = matchArray[1];
minute = matchArray[2];
second = matchArray[4];
ampm = matchArray[6];
if (second=="") { second = null; }
if (ampm=="") { ampm = null }
if (hour < 0 || hour > 23) {
alert("Hour must be between 1 and 12. (or 0 and 23 for military time)");
return false;
}
if (hour <= 12 && ampm == null) {
if (confirm("Please indicate which time format you are using. OK = Standard
Time, CANCEL = Military Time")) {
alert("You must specify AM or PM.");
return false;
}
}
if (hour > 12 && ampm != null) {
alert("You can't specify AM or PM for military time.");
return false;
}
if (minute < 0 || minute > 59) {
alert ("Minute must be between 0 and 59.");
return false;
13. }
if (second != null && (second < 0 || second > 59)) {
alert ("Second must be between 0 and 59.");
return false;
}
return true;
}
function dateDiff(dateform) {
date1 = new Date();
date2 = new Date();
diff = new Date();
if (isValidDate(dateform.firstdate.value) &&
isValidTime(dateform.firsttime.value)) { // Validates first date
date1temp = new Date(dateform.firstdate.value + " " + dateform.firsttime.value);
date1.setTime(date1temp.getTime());
}
else return false; // otherwise exits
if (isValidDate(dateform.seconddate.value) &&
isValidTime(dateform.secondtime.value)) { // Validates second date
date2temp = new Date(dateform.seconddate.value + " " +
dateform.secondtime.value);
date2.setTime(date2temp.getTime());
}
else return false; // otherwise exits
// sets difference date to difference of first date and second date
diff.setTime(Math.abs(date1.getTime() - date2.getTime()));
timediff = diff.getTime();
weeks = Math.floor(timediff / (1000 * 60 * 60 * 24 * 7));
timediff -= weeks * (1000 * 60 * 60 * 24 * 7);
days = Math.floor(timediff / (1000 * 60 * 60 * 24));
timediff -= days * (1000 * 60 * 60 * 24);
hours = Math.floor(timediff / (1000 * 60 * 60));
timediff -= hours * (1000 * 60 * 60);
mins = Math.floor(timediff / (1000 * 60));
timediff -= mins * (1000 * 60);
secs = Math.floor(timediff / 1000);
timediff -= secs * 1000;
dateform.difference.value = weeks + " weeks, " + days + " days, " + hours + "
hours, " + mins + " minutes, and " + secs + " seconds";
return false; // form should never submit, returns false
}
// End -->
</script>
</HEAD>
<!-- STEP TWO: Copy this code into the BODY of your HTML document -->
<BODY>
<center>
<form onSubmit="return dateDiff(this);">
14. <table>
<tr><td>
<pre>
First Date: Date: <input type=text name=firstdate value="" size=10
maxlength=10> (MM/DD/YYYY format)
Time: <input type=text name=firsttime value="" size=10
maxlength=10> (HH:MM:SS format)
Second Date: Date: <input type=text name=seconddate value="" size=10
maxlength=10> (MM/DD/YYYY format)
Time: <input type=text name=secondtime value="" size=10
maxlength=10> (HH:MM:SS format)
<center><input type=submit value="Calculate Difference!">
Date Difference:<br>
<input type=text name=difference value="" size=60>
</center>
</pre>
</td></tr>
</table>
</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: 5.13 KB --></textarea><br><font
FACE="helvetica,arial,geneva"><a href="http://javascript.internet.com/link-
us.html">Did you use this script? Do you like this site?
Please link to us!</a></font></td></tr>
</table>
</form>
<!--content_stop-->
<p>
<td>
<!-- Begin 125X800 Ad Code -->
<style type="text/css">
/* =shopbanneritems
----------------------------------------------- */
#shopicomsky a{
margin:0px;
padding:0;
color:#333;
margin-bottom: 0px;
margin-top: 0px;
background-color: transparent;
}
#shopicomsky a:hover{
text-decoration: none;
}
#shopicomsky p{
margin-top: 5px;
margin-bottom: 5px;
margin-top: expression('10px');
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var endstr = document.cookie.indexOf(";", offset);
if (endstr == -1)
endstr = document.cookie.length;
return unescape(document.cookie.substring(offset, endstr));
}
function GetCookie (name) {
var arg = name + "=";
var alen = arg.length;
var clen = document.cookie.length;
var i = 0;
while (i < clen) {
var j = i + alen;
if (document.cookie.substring(i, j) == arg)
return getCookieVal (j);
i = document.cookie.indexOf(" ", i) + 1;
if (i == 0)
break;
}
return null;
}
function SetCookie (name, value) {
var argv = SetCookie.arguments;
var argc = SetCookie.arguments.length;
var expires = (argc > 2) ? argv[2] : null;
var path = "/"; //(argc > 3) ? argv[3] : null;
var domain = (argc > 4) ? argv[4] : null;
var secure = (argc > 5) ? argv[5] : false;
document.cookie = name + "=" + escape (value) +
((expires == null) ? "" : ("; expires=" +
expires.toGMTString())) +
((path == null) ? "" : ("; path=" + path)) +
((domain == null) ? "" : ("; domain=" + domain)) +
((secure == true) ? "; secure" : "");
}
var emailcookie = GetCookie('email_address');
if (emailcookie == null) {
emailcookie = 'your email here';
}
function chk(email, formname)
{
invalid = "";
if (!email)
invalid = "No email address found! Try reloading the page then use the 'email a
script' feature again.";
else {
if ( (email.indexOf("@") == -1) || (email.indexOf(".") == -1) )
invalid += "nnInvalid email address. Your email address is missing an '@'
sign and a '.' in the domain name (like '.com'). Please check your address then
submit again.";
if (email.indexOf("youremailhere") > -1)
invalid += "nnInvalid email address. Make sure your email address included
your username, the '@' sign, and the domain name (like '.com').";
if (email.indexOf("") > -1)
invalid += "nnEmail address contains an invalid back-slash () character.
Remove the character and submit again.";
17. if (email.indexOf("/") > -1)
invalid += "nnEmail address contains an invalid forward-slash (/) character.
Remove the character and submit again.";
if (email.indexOf("'") > -1)
invalid += "nnEmail address contains an invalid apostrophe (') character.
Remove the character and submit again.";
if (email.indexOf("zaz.com.br") > -1)
invalid += "nnPlease do not use an email address that has an autoresponder set
up for it. Thanks.";
if (email.indexOf("!") > -1)
invalid += "nnEmail address contains an invalid exclamation point (!)
character. Remove the character or correct the email address then submit
again.";
if ( (email.indexOf(",") > -1) || (email.indexOf(";") > -1) )
invalid += "nnPlease only enter one email address in the box at a time.
Remove the extra addresses and submit again.";
if (email.indexOf("?subject") > -1)
invalid += "nnPlease do not add '?subject=...' to your email address.
Scriptbot will send you the script with a pre-defined subject already. Please
remove the '?subject=...' from your email address and submit again.";
}
if (invalid == "")
{
var largeExpDate = new Date();
largeExpDate.setTime(largeExpDate.getTime() + (31 * 24 * 3600 * 1000));
SetCookie('email_address', email, largeExpDate);
if (formname == "scriptbot")
{
page = "http://javascript.internet.com/sent.html?" + email;
window.open(page, "AdWindow", "width=650,height=200");
}
return true;
}
else
{
alert("Oops, something is wrong...." + invalid);
return false;
}
}
function updateNewsletters() {
with (document.forms["newslettersignup"]) {
emailStr = email.value;
var emailPat=/^(.+)@(.+)$/;
var specialChars="()<>@,;:".[]"; // remove ( ) < > @ , ; :
" . [ ] */
var validChars="[^s" + specialChars + "]";
var quotedUser="("[^"]*")";
var ipDomainPat=/^[(d{1,3}).(d{1,3}).(d{1,3}).(d{1,3})]$/;
var atom=validChars + '+';
var word="(" + atom + "|" + quotedUser + ")";
var userPat=new RegExp("^" + word + "(." + word + ")*$");
var domainPat=new RegExp("^" + atom + "(." + atom +")*$");
var matchArray=emailStr.match(emailPat);
if (matchArray==null) {
alert("Email address seems incorrect (check @ and .'s)");
return false;;
}
18. var user=matchArray[1];
var domain=matchArray[2];
if (user.match(userPat)==null) {
alert("The username doesn't seem to be valid.");
return false;
}
var IPArray=domain.match(ipDomainPat);
if (IPArray!=null) {
for (var i=1;i<=4;i++) {
if (IPArray[i]>255) {
alert("Destination IP address is invalid!");
return false;
}
}
}
var domainArray=domain.match(domainPat);
if (domainArray==null) {
alert("The domain name doesn't seem to be valid.");
return false;
}
var atomPat=new RegExp(atom,"g");
var domArr=domain.match(atomPat);
var len=domArr.length;
if (domArr[domArr.length-1].length<2 || domArr[domArr.length-1].length>3) {
alert("The address must end in a three-letter domain, or two letter country.");
return false;
}
if (len<2) {
var errStr="This address is missing a hostname!";
alert(errStr);
return false;
}
List_Name.value = newsletter.options[newsletter.selectedIndex].value
+ nltype.options[nltype.selectedIndex].value;
var largeExpDate = new Date();
largeExpDate.setTime(largeExpDate.getTime() + (31 * 24 * 3600 * 1000));
SetCookie('email_address', emailStr, largeExpDate);
return true;
}
}
// End -->
</script>
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![<HTML>
<HEAD>
<TITLE>The JavaScript Source: Math Related: Date Difference</TITLE>
<META HTTP-EQUIV="The JavaScript Source" CONTENT = "no-cache">
<META NAME="date" CONTENT="2000-09-09">
<META NAME="channel" CONTENT="Web Developer">
<META NAME="author" CONTENT="Ronnie T. Moore">
<META NAME="section" CONTENT="Math Related">
<META NAME="description" CONTENT="Enter two dates (including the time!) and
this script will display the number of weeks, days, hours, minutes, and seconds
between the two. The seconds field is optional, too. For an example, try
entering your birthdate and compare it to today's date.">
<SCRIPT LANGUAGE="JavaScript">
<!-- Original: Ronnie T. Moore -->
<!-- Web Site: The JavaScript Source -->
<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->
<!-- Begin
function isValidDate(dateStr) {
// Date validation function courtesty of
// Sandeep V. Tamhankar (stamhankar@hotmail.com) -->
// Checks for the following valid date formats:
// MM/DD/YY MM/DD/YYYY MM-DD-YY MM-DD-YYYY
var datePat = /^(d{1,2})(/|-)(d{1,2})2(d{4})$/; // requires 4 digit year
var matchArray = dateStr.match(datePat); // is the format ok?
if (matchArray == null) {
alert(dateStr + " Date is not in a valid format.")
return false;
}
month = matchArray[1]; // parse date into variables
day = matchArray[3];
year = matchArray[4];
if (month < 1 || month > 12) { // check month range
alert("Month must be between 1 and 12.");
return false;
}
if (day < 1 || day > 31) {
alert("Day must be between 1 and 31.");
return false;
}
if ((month==4 || month==6 || month==9 || month==11) && day==31) {
alert("Month "+month+" doesn't have 31 days!")
return false;
}
if (month == 2) { // check for february 29th
var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0));
if (day>29 || (day==29 && !isleap)) {
alert("February " + year + " doesn't have " + day + " days!");
return false;
}
}
return true;
}
function isValidTime(timeStr) {
// Time validation function courtesty of
// Sandeep V. Tamhankar (stamhankar@hotmail.com) -->](https://image.slidesharecdn.com/date-difference1-130203121126-phpapp01/85/date-difference1-1-320.jpg)
![// Checks if time is in HH:MM:SS AM/PM format.
// The seconds and AM/PM are optional.
var timePat = /^(d{1,2}):(d{2})(:(d{2}))?(s?(AM|am|PM|pm))?$/;
var matchArray = timeStr.match(timePat);
if (matchArray == null) {
alert("Time is not in a valid format.");
return false;
}
hour = matchArray[1];
minute = matchArray[2];
second = matchArray[4];
ampm = matchArray[6];
if (second=="") { second = null; }
if (ampm=="") { ampm = null }
if (hour < 0 || hour > 23) {
alert("Hour must be between 1 and 12. (or 0 and 23 for military time)");
return false;
}
if (hour <= 12 && ampm == null) {
if (confirm("Please indicate which time format you are using. OK = Standard
Time, CANCEL = Military Time")) {
alert("You must specify AM or PM.");
return false;
}
}
if (hour > 12 && ampm != null) {
alert("You can't specify AM or PM for military time.");
return false;
}
if (minute < 0 || minute > 59) {
alert ("Minute must be between 0 and 59.");
return false;
}
if (second != null && (second < 0 || second > 59)) {
alert ("Second must be between 0 and 59.");
return false;
}
return true;
}
function dateDiff(dateform) {
date1 = new Date();
date2 = new Date();
diff = new Date();
if (isValidDate(dateform.firstdate.value) &&
isValidTime(dateform.firsttime.value)) { // Validates first date
date1temp = new Date(dateform.firstdate.value + " " + dateform.firsttime.value);
date1.setTime(date1temp.getTime());
}
else return false; // otherwise exits
if (isValidDate(dateform.seconddate.value) &&
isValidTime(dateform.secondtime.value)) { // Validates second date
date2temp = new Date(dateform.seconddate.value + " " +
dateform.secondtime.value);
date2.setTime(date2temp.getTime());
}
else return false; // otherwise exits](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)