I have an input textbox on a form in which I want upper-case characters only, to which end I am using style="text-transform:uppercase" in the HTML input definition. Text is converted to upper-case upon data-entry, but when the value is posted, it is passed in the entered case, not always uppercase.
How can I ensure that entered data AND posted value are both uppercase? I would prefer a HTML/CSS solution if possible, but failing that, JavaScript will do.
TIA
Alan