Java date format to JavaScript date format

user_124426 0
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I would like to be able to convert a Java date format string, e.g. dd/MM/yyyy (07/06/2009) to a JavaScript date format string, e.g. dd/mm/yy (07/06/2009).

Has anyone done this before, or got any idea where I might find some code that already does this?

Thanks in advance.

Edit:

Thanks for all the replies but now I realize my mistake and possibly why so many of you were struggling to understand the question; JavaScript doesn't have a built in date formatting ability. I am using the jQuery UI datepicker and I have been setting its date format, assuming it would be calling a standard JS function at some point, not using its own library! When I googled for formatting strings I jumped straight to the tables of what letters could be used, skipping the bit at the beginning explaining how to use the script.

Anyway I'll have to go ahead and possibly write my own I guess, converting a Java date format string into a jQuery date format string (or as close as possible) - I am working on the i18n of our product and have created a java class that stores the preferred date format string used throughout the application, my intention was to also have the ability to supply any jsps with the format string that is equivalent in JS.

Thanks anyway.

date-format javascript java
10 Answers

If you just need to pass a date from Java to JavaScript, the best way to do it, I think, would be to convert the Java date to milliseconds using date.getTime(), create a JavaScript date initialized with this milliseconds value with new Date(milliseconds)and then format the date with the means of the JavaScript Date object, like: date.toLocaleString().

user_1207790

A similar topic has been answered here: Converting dates in JavaScript

I personally have found this to be a rather large pain and took the author's suggestion and used a library. As noted, jQuery datepicker has one that is a viable solution if you can afford the overhead of download for your application or already using it.

user_661250

Check out moment.js! It's "A lightweight javascript date library for parsing, manipulating, and formatting dates". It is a really powerful little library.

Here's an example...

var today = moment(new Date());
today.format("MMMM D, YYYY h:m A");        // outputs "April 11, 2012 2:32 PM"

// in one line...
moment().format("MMMM D, YYYY h:m A");     // outputs "April 11, 2012 2:32 PM"

Here's another example...

var a = moment([2012, 2, 12, 15, 25, 50, 125]);
a.format("dddd, MMMM Do YYYY, h:mm:ss a"); // "Monday, March 12th 2012, 3:25:50 pm"
a.format("ddd, hA");                       // "Mon, 3PM"
a.format("D/M/YYYY");                      // "12/3/2012"

Also, its worth mentioning to checkout date.js. I think the two libraries complement each other.

user_1969210
user_1233210

The javascript code in this page implements some date functions and they "use the same format strings as the java.text.SimpleDateFormat class, with a few minor exceptions". It is not the very same as you want but it can be a good start point.

user_1224420
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