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Test Valid Date String for JavaScript

Créé 2013-05-31 20:44:00
Mise à jour 2023-11-22 15:29:06

Here we check the valid strings for the argument of the Date:: class constructor to create Date object under JavaScript, ie,
<script type="text/javascript">
var objDate;
objDate = new Date("Nov 23, 2024 01:28:43 GMT+0100");
<script>
We are trying to get the PHP date format string to format date time to form the pipeline PHP DateTime() => js Date() => document.write() to output on screen. Here is the summary of cases we tested for you:
#js new Date() FeedIEChromeFirefoxSafariOperaMobile
0Nov 23, 2024 01:28:43 GMT+0100++++++
1Nov 23 2024 01:28:43 GMT+0100++++++
2Nov 23, 2024 01:28:43 GMT+1++++++
32024-11-23 01:28:43 GMT+0100-+--++
42024-11-23 01:28:43 GMT+01:00-+--++
52024-11-23 01:28:43 GMT+100-+--++
623 Nov 2024 01:28:43+01:00-+----
7Nov 23 2024 01:28:43 GMT+1:00-++-++
8Nov 23, 2024 01:28:43 GMT+01:00-++-++
92024-11-23 01:28:43 GMT+1-+--++
102024-11-23 01:28:43-+--++
112024-11-23T01:28:43+01:00+++++-
122024-11-23 01:28:43+01:00-+----
1311-23-2024 01:28:43 GMT+0100++---+
1411/23, 2024 01:28:43 GMT+0100+++-++
1523-Nov-2024 01:28:43 GMT+0100-+-+-+
Tab. I: + Valid Date Time String for Javascript::Date() class, - Invalid.

JavaScript is very English speaking. In effect, among the 3 first universal formats, the English month abbreviation is used. As it can be observed that no pure numerical date string is found like "2024-11-23 01:28:43" to fit JavaScript syntax in all browsers. Please check this with your preferred browser.

Detail of JavaScript Tests

Below, the bold date time outputs at the right hand side of => are the JavaScript Date Class results.

0. Good Format "mmm dd, yyyy hh:mm:ss GMT+0200"

For example, Nov 23, 2024 01:28:43 GMT+0100 =>

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
0Nov 23, 2024 01:28:43 GMT+0100++++++

This format is valid for all browsers in our hands, including Internet Explorer, Google Chrome, Firefox, Safari, Opera, Mobile Safari. On PHP, you get this DateTime format of the current time by

<?php
$objDateTime = new DateTime();
$strDateTime = $objDateTime->format("M d, Y H:i:s \G\M\TO");
?>
One observes that this is the Standard English Date Time expression.

1. Another Good Format "mmm dd yyyy hh:mm:ss GMT+0200"

For example, Nov 23 2024 01:28:43 GMT+0100 =>

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
1Nov 23 2024 01:28:43 GMT+0100++++++

This format is also valid for all browsers in our hands, including IE, Google Chrome, Firefox, Safari, Opera, Safari Mobile. On PHP, you get this DateTime format of the current time by

<?php
$objDateTime = new DateTime();
$strDateTime = $objDateTime->format("M d Y H:i:s \G\M\TO");
?>
One notes that this is another English Date Time expression with timezone.

2. Good Format "mmm dd, yyyy hh:mm:ss GMT+2"

For example, Nov 23, 2024 01:28:43 GMT+1 =>

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
2Nov 23, 2024 01:28:43 GMT+1++++++
As shown, you can shorten the timezone notification.

Bad Formats

All following date time strings are good for some browsers, but unfortunately bad for others.

3. Format "yyyy-mm-dd hh:mm:ss GMT+0200"

For example, 2024-11-23 01:28:43 GMT+0100 =>

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
32024-11-23 01:28:43 GMT+0100-+--++

4. Format "yyyy-mm-dd hh:mm:ss GMT+02:00"

For example, 2024-11-23 01:28:43 GMT+01:00 =>

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
42024-11-23 01:28:43 GMT+01:00-+--++

4. Format "yyyy-mm-dd hh:mm:ss GMT+0200"

For example, 2024-11-23 01:28:43 GMT+01:00 =>

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
52024-11-23 01:28:43 GMT+100-+--++

6. Format "dd mmm yyyy hh:mm:ss+02:00"

For example, 23 Nov 2024 01:28:43+01:00 =>

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
623 Nov 2024 01:28:43+01:00-+----

7. Format "mmm dd yyyy hh:mm:ss GMT+02:00"

For example, Nov 23 2024 01:28:43 GMT+1:00 =>

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
7Nov 23 2024 01:28:43 GMT+1:00-++-++

8. Format "mmm dd, yyyy hh:mm:ss GMT+02:00"

For example, Nov 23, 2024 01:28:43 GMT+01:00 =>

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
8Nov 23, 2024 01:28:43 GMT+01:00-++-++

9. Format "yyyy-mmm-dd hh:mm:ss GMT+2"

For example, 2024-11-23 01:28:43 GMT+1 =>

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
92024-11-23 01:28:43 GMT+1-+--++

10. Format "yyyy-mmm-dd hh:mm:ss"

For example, 2024-11-23 01:28:43 =>

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
102024-11-23 01:28:43-+--++

11. Format "yyyy-mmm-ddThh:mm:ss+02:00"

For example, 2024-11-23T01:28:43+01:00 =>

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
112024-11-23T01:28:43+01:00+++++-
You get this format by PHP5 DateTime=>format('c'). It's regrettable that JavaScript Mobile Safari does not support this format, as this is the universal date time string, used by SQL server, MySQL Server, ...

12. Format "yyyy-mmm-dd hh:mm:ss GMT+02:00"

For example, 2024-11-23 01:28:43+01:00 =>

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
122024-11-23 01:28:43+01:00-+----

13. Format "mm-dd-yyyy hh:mm:ss GMT+0200"

For example, 11-23-2024 01:28:43 GMT+0100 =>

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
1311-23-2024 01:28:43 GMT+0100++---+

14. Format "mm/dd, yyyy hh:mm:ss GMT+0200"

For example, 11/23, 2024 01:28:43 GMT+0100 =>

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
1411/23, 2024 01:28:43 GMT+0100+++-++

JavaScript new Date() running results at one single glance under Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

Below, we summarize the date time feed checked above in a single table under your current browser.

#PHP DateTime->formatjs new Date() Feedjs new Date() outputs
0M d, Y H:i:s \G\M\TONov 23, 2024 01:28:43 GMT+0100
1M d Y H:i:s \G\M\TONov 23 2024 01:28:43 GMT+0100
2Nov 23, 2024 01:28:43 GMT+1
3Y-m-d H:i:s \G\M\TO2024-11-23 01:28:43 GMT+0100
4Y-m-d H:i:s \G\M\TP2024-11-23 01:28:43 GMT+01:00
52024-11-23 01:28:43 GMT+100
6d M Y H:i:s \G\M\TP23 Nov 2024 01:28:43+01:00
7Nov 23 2024 01:28:43 GMT+1:00
8M d Y H:i:s \G\M\TPNov 23, 2024 01:28:43 GMT+01:00
92024-11-23 01:28:43 GMT+1
10Y-m-d H:i:s2024-11-23 01:28:43
11c2024-11-23T01:28:43+01:00
12Y-m-d H:i:sP2024-11-23 01:28:43+01:00
13m-d-Y H:i:s\G\M\TO11-23-2024 01:28:43 GMT+0100
14m/d, Y H:i:s\G\M\TO11/23, 2024 01:28:43 GMT+0100
15d-M-Y H:i:s \G\M\TO23-Nov-2024 01:28:43 GMT+0100
Tab II: Real-Time JavaScript Date() Results with different Date time feed. See php.net: date — Format a local time/date.

Here the column "PHP DateTime->format" gives the format string to be used to obtain the "js new Date() Feed" column for JavaScript Date Constructor. The last column "js new Date() outputs" is JavaScript running results given by new Date(Date-Time String):

<script type="text/javascript">
document.write(new Date("Nov 23, 2024 01:28:43 GMT+0100"));
</script>

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