restrict date and month in regex expression in javascript

Question

Java script function

<script language="JavaScript">

function checkdate(date1){
var validformat=/^\d{2}\/\d{2}\/\d{4} \d{2}\:\d{2}\:\d{2}$/ 
if(!validformat.test(date1.value)){
alert("Invalid Date");
 document.form.date1.value="";
}

}

The above is working well ! but I want to restrict the month and days accordingly.

my format = mm/dd/YYYY hh:mm:ss

Month should not be more than 12 and less than 1 and same , date should not be more than 31 and less than 1;

one thing more !

02/02/2013 00:00:00 is valid date but 2/2/2013 00:00:00 showing as a invalid date.

How to control these two situations ?

CSᵠ · Accepted Answer · 2013-04-12 05:51:33Z

1

DateTime RegEx for the m/d/YYYY hh:mm:ss and mm/dd/YYYY hh:mm:ss

/^(0?[1-9]|1[012])\/(0?[1-9]|[12]\d|3[01])\/[12]\d{3} ([01]\d|2[0-3])\:[0-5]\d\:[0-5]\d$/

Explained demo: http://regex101.com/r/bS0gB6

edited Apr 12, 2013 at 5:51

answered Apr 12, 2013 at 5:29

CSᵠ

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3 Comments

Shahid Ghafoor Over a year ago

2/2/2013 00:00:00 and 2/2/2013 23:59:59 working, but 2/2/2013 12:30:20 not working!

CSᵠ Over a year ago

you can remove your comments now @ShahidGhafoor

Shahid Ghafoor Over a year ago

Can you please share me reg-ex of this format = YYYY-MM-DD hh:mm:ss

Ali Shah Ahmed · Accepted Answer · 2013-04-12 05:28:44Z

1

You can try the following method:

var comp = value.split('/');
var d = parseInt(comp[0], 10);
var m = parseInt(comp[1], 10);
var y = parseInt(comp[2], 10);
var date = new Date(y, m - 1, d);
var validDateFormat = false;
if (date.getFullYear() == y && date.getMonth() + 1 == m && date.getDate() == d) {
    validDateFormat = true;
}

if validDateFormat is true, the date is valid.

answered Apr 12, 2013 at 5:28

Ali Shah Ahmed

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Comments

npinti · Accepted Answer · 2013-04-12 05:19:38Z

0

You can take a look at this website which allows you to create regular expressions for numeric ranges.

That being said, you should use numerical operators provided by the language your are using (Javascript) for numeric operations and not regular expressions.

Alternatively, you could use a DateTime Picker created in JQuery, as shown here.

answered Apr 12, 2013 at 5:19

npinti

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2 Comments

Shahid Ghafoor Over a year ago

var validformat=/^\d{2}\/\d{2}\/\d{4} \d{2}\:\d{2}\:\d{2}$/ can you append in this ? I have no nay idea regex, just copy paste from net

npinti Over a year ago

@ShahidGhafoor: The JQuery control allows you to specify the Date and Time format, like so: $('#dateTextBox').datetimepicker({ timeFormat: "HH:mm", dateFormat: "dd-mm-yy"}).

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