How to stop form submit when onClick event returns false

Re: How to stop form submit when onClick event returns false

"Randell D." <reply.to.news. group.only@and. share.com> wrote in
news:g%Wwb.4974 70$pl3.300911@p d7tw3no:
[color=blue]
> I have the following code for my submit button
>
> <input type="submit" name="action" value="Save Article"
> onClick="this.v alue='Saving... '; performPrePostC hecks();">[/color]

[snip]
[color=blue]
> How come that irrespective of the function performPrePostC hecks
> returning true, or false, that the form is still submitted?[/color]

Because that's what you asked it to do. To be more specific, an action
handler is treated as if it's a function, with the return value determining
whether or not to go ahead. You don't return anything, so the default is
"yes, go ahead." Try returning the result of your checking function.

Is it possible that you're used to Perl, where a function (aka sub) by
default returns the value of the last statement executed? Javascript
doesn't use that convention; if you want to return a value, you have to do
so explicitly.

Re: How to stop form submit when onClick event returns false

> onClick="this.v alue='Saving... '; performPrePostC hecks();">

To clarify Eric's correct comments, you want:
onClick="this.v alue='Saving... '; return performPrePostC hecks();"

regards,
RR

Re: How to stop form submit when onClick event returns false

put the funtion that returns fale in inte forms onsubmit handler intead of
the submit button.

Stu

"Randell D." <reply.to.news. group.only@and. share.com> wrote in message
news:g%Wwb.4974 70$pl3.300911@p d7tw3no...[color=blue]
>
> Folks
>
> I have the following code for my submit button
>
> <input type="submit" name="action" value="Save Article"
> onClick="this.v alue='Saving... '; performPrePostC hecks();">
>
> I have tested performPrePostC hecks() - Its a long script, but I have[/color]
proven[color=blue]
> its success by having an alert box echo the success with a simple true or
> false message like so:
>
> <script type="text/javascript">
> function performPrePostC hecks()
> {
> if(checkRequire dFormFields('fo rm1','headline' ,'Headline')==f alse)
> { alert("false");
> return false;
> }
>
> alert("true");
> return true;
> }
> </script>
>
>
> How come that irrespective of the function performPrePostC hecks returning
> true, or false, that the form is still submitted?
>
> Can someone point me in the right direction?
>
> Thanks,
> Randell D.
>
>[/color]

Re: How to stop form submit when onClick event returns false


"RR" <newspaper.20.b room@spamgourme t.com> wrote in message
news:KeYwb.2757 8$aT.4901@news-server.bigpond. net.au...[color=blue][color=green]
> > onClick="this.v alue='Saving... '; performPrePostC hecks();">[/color]
>
> To clarify Eric's correct comments, you want:
> onClick="this.v alue='Saving... '; return performPrePostC hecks();"
>
> regards,
> RR
>
>[/color]

Luvely Juvely... thanks to both of you - and the nice thing is, I actually
understand where I went wrong and why it should be the way you guys
suggested...

Thanks for the help,
randell d.