How to submit form with data converted into Big5

Question

So I have a page, and try to submit a form along with user-entered data.

Demo: http://jsfiddle.net/DerekL/Cck8Q/

However, the browser sends out the data in UTF-8, while the server requires it to be in Big5. Basically this means,

encodeURIComponent("電")    //"%E9%9B%BB"

this is not using the correct character set, and the correct string should be

%B9q

Is there anyway to "make" the browser to send the data using Big5? JavaScript conversion indeed is possible, but it would end up like this.

Answer 1

If you're only looking for encoding in HTML form submission, not JS encoding conversion, you can take advantage of the accept attribute (HTML4) and/or accept-charset attribute (HTML5) of <form>:

<form action="..." method="get" accept="BIG5" accept-charset="BIG5">

Online demo (Checked on a Chrome on XP Simplified Chinese version).

MDN document about <form> attributes