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I can probably do this by mapping out all the number and letter key codes...
but I was just wondering if there is a built-in JavaScript function that can
determinine if the key pressed in the keydown event is a letter or a digit.
Or, more specifically to my functional requirement, a key that will affect
the contents of an input of type text. So I guess that plus backspace and
delete.

TIA,
Paul

PJ6 wrote on 03 dec 2005 in comp.lang.javascript:

> I can probably do this by mapping out all the number and letter key
> codes... but I was just wondering if there is a built-in JavaScript
> function that can determinine if the key pressed in the keydown event
> is a letter or a digit. Or, more specifically to my functional
> requirement, a key that will affect the contents of an input of type
> text. So I guess that plus backspace and delete.
>

You are not telling what you mean by "do this", but altering the
functionality of the ext input field risks the penalty of users becoming
frustrated and going runnu=ing to other sites.

If you must, play with

<input onkeypress='alert(event.keyCode)'>

and see the ascii output enacted.

Then try:

<input onkeypress='var e=event.keyCode;return (e>47)&&(e<59)'>

--
Evertjan.
The Netherlands.
(Replace all crosses with dots in my emailaddress)

"Evertjan." <> wrote in message
news:Xns9721C3E8FD690eejj99@194.109.133.242...

> You are not telling what you mean by "do this",

The subject of the post, "determining letter or digit on keydown".

> but altering the
> functionality of the ext input field risks the penalty of users becoming
> frustrated and going runnu=ing to other sites.

You assume that I'm altering behavior apparent to the user and that I'm
working on a site that's selling something, neither of which is true.

> If you must, play with
>
> <input onkeypress='alert(event.keyCode)'>
>
> and see the ascii output enacted.

Yeah. That's what I specifically said that I could do but would rather
avoid.

Paul

PJ6 wrote on 03 dec 2005 in comp.lang.javascript:

> "Evertjan." <> wrote in message
> news:Xns9721C3E8FD690eejj99@194.109.133.242...
>
>> You are not telling what you mean by "do this",
>
> The subject of the post, "determining letter or digit on keydown".
>
>> but altering the
>> functionality of the ext input field risks the penalty of users
>> becoming frustrated and going runnu=ing to other sites.
>
> You assume that I'm altering behavior apparent to the user and that
> I'm working on a site

What non-apparent function would you device?

that's selling something, neither of which is true.

I did not, but let it be.

>> If you must, play with
>>
>> <input onkeypress='alert(event.keyCode)'>
>>
>> and see the ascii output enacted.
>
> Yeah. That's what I specifically said that I could do but would rather
> avoid.

What would you avoid? Finding out the function yourself?

You skip my final solution:

I wrote:
> Then try:
>
> <input onkeypress='var e=event.keyCode;return (e>47)&&(e<59)'>

Is this not what you want?



--
Evertjan.
The Netherlands.
(Replace all crosses with dots in my emailaddress)