表单属性接受编码在MS Edge中无效

Question

I have a Login-Form in HTML/PHP which uses the accept-charset attribute in the <form>-tag, because there were problems with passwords which use German "Umlaute" and other special-chars.

In Firefox and Chrome everything works as expected. Only MS Edge refuses the password as wrong.

So the PHP-Loginscript gets wrong data from Edge - I think because the accept-charset is ignored.

What can I do, to solve this problem? How can I tell MS Edge to use accept-charset="ISO-8859-15"?

Answer 1

Now, the solution:

IE and Edge obviously ignore the accept-charset attribute.

I solved my problem - yes, my english is also a problem ;) - with the following JavaScript:

<form ... accept-charset="ISO-8859-1" onsubmit="document.charset = 'ISO-8859-1'">

That's ok, because what's after login also requieres JavaScript to be enabled