code for entering one alphabet only one time in a text box by using onkeyup function

[Alan Francis]

give me code for entering one alphabet only one time in a text box by using onkeyup function

[Thew]

"Give me a code"

- Hmm :/

"Entering one alphabet only one time in a text box by using onkeyup function"

?????

What do you want to use? AJAX? JQuery? What is your question?

We can't / won't help ya when you ask things like this...

[Canabeez]

Take a look at this, I believe this might help you.

Good luck.