Specifying the value output of of an HTML5 input type = date?

Question

I'd like to add native date pickers to my application, which currently uses a legacy, home-rolled system. Date input support isn't widespread, yet, but if I could present both implementations based on compatibility, that would be ideal.

Is there any way to specify the output of the value given by an HTML datepicker? The default for opera is yyyy-mm-dd, and I very explicitly need dd-MMM-yyyy.

Is there any way to control this output, currently?

Answer 1

The HTML5 date input field is specific about the format it uses: RFC 3339 full-date

Is it possible to change the legacy date picker to use yyyy-mm-dd format (and update the server side that reads that)?

I assume not, so then you can add some Javascript glue code that listens for a change event on the HTML5 input and updates a hidden date value field to match the format of the legacy date picker (converts yyyy-mm-dd to dd-MMM-yyyy).