How to change the input to uppercase as it is being typed

Question

I am using onkeyup=\"this.value=this.value.toUpperCase();\"to change input text value in uppercase. This is working but my need is to change a single letter in

Answer 1

How about CSS:

input.upper { text-transform: uppercase; }

Remark: This will still send the value to the server as typed by the user and not uppercased.