In my opinion, the best way is always a server-side solution where you have
a pre-defined unique key for an insert, and you conditionally check it if
exists in your database before the insert - because if it does, then do an
Update, else the Insert.
Or if relying on client-side scripting, then ALWAYS use the "onsubmit" of
the <FORM> tag and never the "onclick" of the input button.
Because for certain browsers, if the cursor is in a text field (regardless
if a submit button is present or disabled) sometimes a simply hit of the
keyboard ENTER key will trigger the form submit.
Whereas, the onsubmit event will stop the submit regardless of how it was
fired, something like so:
var globalVarCheck = false;
function checkSubmit(){
document.getElementById('theButton').disabled = true;
document.getElementById('theButton').value = 'Please stand by...';
if(globalVarCheck == false){
globalVarCheck = true;
return true;
}else{
return false;
}
}
<form method="post" onsubmit="return checkSubmit();">
<input type="text" name="field1" value="">
<input type="submit" id="theButton" value="Submit">
</form>
Hope that helps.
~~~~~~~~~~~~~~~~~~~~
Scott Cadillac
(403) 254-5002
[EMAIL PROTECTED]
XML-Extranet
P.O. Box 69006
RPO Bridlewood SW
Calgary, Alberta
Canada T2Y 4T9
http://www.xmlx.net/
~~~~~~~~~~~~~~~~~~~~
> -----Original Message-----
> From: Alan Wolfe [mailto:[EMAIL PROTECTED]
> Sent: Sunday, February 11, 2007 9:08 AM
> To: [email protected]
> Subject: Re: Witango-Talk: Preventing two order submits
>
> Believe it or not Roland you can do it this way too (:
>
> <input type="submit" value="Click Me"
> onclick="this.style.visility='hidden';this.style.display='none';">
>
>
>
> On 2/10/07, Roland Dumas <[EMAIL PROTECTED]> wrote:
> >
> > On Feb 10, 2007, at 1:40 PM, Dan Stein wrote:
> >
> > > More investigation seems like what happens is since I don't go
> > > through the
> > > DB and mark those cart items as having been inserted into our FMP
> > > database
> > > right away it is possible for them if the hit the button that close
> > > together
> > > that it will see the items in the cart again and I guess add them
> > > to the
> > > request scope cart. I am still a little fuzzy on this.
> > >
> > > But if I make the submit button go away will that take care of
> > > this? Can you
> > > point me to a place where I can get that code?
> > <div id=submitWrapper style="display: block;"><input type=submit
> > value=submit onClick="document.getElementById
> > ('submitWrapper').style.display = 'none'"></div>
> > >
> > > It looks like I could move the cleanup cart routine to right under
> > > insert
> > > order items or maybe even above it. Would that work and could it
> > > have any
> > > other effect we did not want?
> > >
> > > --
> > ________________________________________________________________________
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> >
> >
> ________________________________________________________________________
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