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Key Capture in Mozilla

kindawords Posted: Fri Apr 15, 2005 7:51 pm

Joined: 11 Jan 2006

Posts: 46

Key Capture in Mozilla

OK,
I`m trying to capture a return key being pressed in a text box.

I capture the event successfully
onKeyPress="javascript:TrapKey();

and it calls this function...
function TrapKey(e)
{
alert(`Key Trap Entered`);
if(e.keyCode == 13)
{
e.keyCode == 0;
//do some stuff...
}
}

this works perfectly in IE

but in Mozilla the function gets called, but e is always undefined
and hence I cannot read the key code.

I`ve done some googling and come up with some variations

that try and set e, if it is not defined, but none of these work either, such as

if (!e) var e = window.event;

Any thoughts or hints would be appreciated.

Thanks

--
Dean Fiala
Very Practical Software, Inc
http://www.vpsw.com

mk7306 Posted: Fri Apr 15, 2005 10:21 pm

Joined: 15 Apr 2005

Posts: 1

Key Capture in Mozilla

Hey Dean,

Try this:

http://www.severnsolutions.co.uk/twblog/archive/2003/09/14/keypressevents

Mark

>From: Dean Fiala <dfiala@...>
>Reply-To: AspNetAnyQuestionIsOk@yahoogroups.com
>To: AspNetAnyQuestionIsOk@yahoogroups.com
>Subject: [AspNetAnyQuestionIsOk] Key Capture in Mozilla
>Date: Fri, 15 Apr 2005 10:51:22 -0400
>
>
>OK,
>I`m trying to capture a return key being pressed in a text box.
>
>I capture the event successfully
>onKeyPress="javascript:TrapKey();
>
>and it calls this function...
>function TrapKey(e)
>{
> alert(`Key Trap Entered`);
> if(e.keyCode == 13)
> {
> e.keyCode == 0;
> //do some stuff...
> }
>}
>
>this works perfectly in IE
>
>but in Mozilla the function gets called, but e is always undefined
>and hence I cannot read the key code.
>
>I`ve done some googling and come up with some variations
>
>that try and set e, if it is not defined, but none of these work either,
>such as
>
>if (!e) var e = window.event;
>
>Any thoughts or hints would be appreciated.
>
>Thanks
>
>
>--
>Dean Fiala
>Very Practical Software, Inc
>http://www.vpsw.com
>
>
>
>Yahoo! Groups Links
>
>
>
>
>
>
>

kindawords Posted: Fri Apr 15, 2005 11:28 pm

Joined: 11 Jan 2006

Posts: 46

Key Capture in Mozilla

Mark,
Thank you. That was a great help.

For those playing at home, here`s what I ended up with that works in
both IE and FireFox...

function TrapKey(evt){

evt = (evt) ? evt : (window.event) ? event : null;
if (evt)
{

var charCode = (evt.charCode) ? evt.charCode : ((evt.keyCode) ?
evt.keyCode :((evt.which) ? evt.which : 0));

if(charCode == 13)
{
//do stuff
return false;
}
}
}

Also, found it helpful to call the function properly - doh!

onKeyPress="javascript:TrapKey(event);"

Gotta love all those divergent DOMs!

Thanks again.

On 4/15/05, Mark L Keller <mk7306@...> wrote:
>
> Hey Dean,
>
> Try this:
>
> http://www.severnsolutions.co.uk/twblog/archive/2003/09/14/keypressevents
>
> Mark
>
> >From: Dean Fiala <dfiala@...>
> >Reply-To: AspNetAnyQuestionIsOk@yahoogroups.com
> >To: AspNetAnyQuestionIsOk@yahoogroups.com
> >Subject: [AspNetAnyQuestionIsOk] Key Capture in Mozilla
> >Date: Fri, 15 Apr 2005 10:51:22 -0400
> >
> >
> >OK,
> >I`m trying to capture a return key being pressed in a text box.
> >
> >I capture the event successfully
> >onKeyPress="javascript:TrapKey();
> >
> >and it calls this function...
> >function TrapKey(e)
> >{
> > alert(`Key Trap Entered`);
> > if(e.keyCode == 13)
> > {
> > e.keyCode == 0;
> > //do some stuff...
> > }
> >}
> >
> >this works perfectly in IE
> >
> >but in Mozilla the function gets called, but e is always undefined
> >and hence I cannot read the key code.
> >
> >I`ve done some googling and come up with some variations
> >
> >that try and set e, if it is not defined, but none of these work either,
> >such as
> >
> >if (!e) var e = window.event;
> >
> >Any thoughts or hints would be appreciated.
> >
> >Thanks
> >
> >
> >--
> >Dean Fiala
> >Very Practical Software, Inc
> >http://www.vpsw.com
> >
> >
> >
> >Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
>
> Yahoo! Groups Links
>
>
>
>
>

--
Dean Fiala
Very Practical Software, Inc
http://www.vpsw.com

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