Help With setTimeout

[Dennis M. Marks]

There is no problem with the following function. I want to insert code
at the point that the function does not repeat. I was pretty sure that
it could be inserted at the /// but that repeats with every loop. What
happens after the setTimeout? Does the flow continue through the bottom
of the function every time? How can I trap it on the last loop?


function moveTrain() {
if (MenuX < PosX) {
MenuX = MenuX + increment;
if (is_NS5up) {
document.getEle mentById('train Division').styl e.left = MenuX+"px";
}
else {
eval(Lq+'trainD ivision'+Sq+'.l eft=MenuX');
}
setTimeout('mov eTrain()',speed );
}
///
}

--
Dennis M. Marks


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[Dennis M. Marks]

Re: Help With setTimeout- Please Ignore

In article <13122003172138 5541%denmarks@d csi.net>, Dennis M. Marks
<denmarks@dcsi. net> wrote:
[color=blue]
> There is no problem with the following function. I want to insert code
> at the point that the function does not repeat. I was pretty sure that
> it could be inserted at the /// but that repeats with every loop. What
> happens after the setTimeout? Does the flow continue through the bottom
> of the function every time? How can I trap it on the last loop?
>
>
> function moveTrain() {
> if (MenuX < PosX) {
> MenuX = MenuX + increment;
> if (is_NS5up) {
> document.getEle mentById('train Division').styl e.left = MenuX+"px";
> }
> else {
> eval(Lq+'trainD ivision'+Sq+'.l eft=MenuX');
> }
> setTimeout('mov eTrain()',speed );
> }
> ///
> }[/color]


It looks like there is no practical way to start a sound using
javascript that will work on most browsers therefore I don't need a way
to insert commands.

--
Dennis M. Marks


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[Lasse Reichstein Nielsen]

Re: Help With setTimeout

"Dennis M. Marks" <denmarks@dcsi. net> writes:
[color=blue]
> There is no problem with the following function.[/color]

I can see some ;)
[color=blue]
> I want to insert code at the point that the function does not
> repeat. I was pretty sure that it could be inserted at the /// but
> that repeats with every loop.[/color]

Either put it after an "else" or put a return after the call to
"setTimeout ".
[color=blue]
> What happens after the setTimeout?[/color]

The next line, just as any other function call. Calls to "setTimeout "
returns instantly, and evaluation continues.


Now for the comments:
[color=blue]
> function moveTrain() {
> if (MenuX < PosX) {
> MenuX = MenuX + increment;
> if (is_NS5up) {[/color]

Browser detection is rarely safe. You should test for the existence
of the features you use instead:

if (document.getEl ementById) {
[color=blue]
> document.getEle mentById('train Division').styl e.left = MenuX+"px";
> }
> else {
> eval(Lq+'trainD ivision'+Sq+'.l eft=MenuX');[/color]

You don't need eval for this. I don't know what Lq and Sq are, but you
never need to use eval for accessing properties or variables. It is
slow, inefficient, and hard to debug.

How about:
if (document.all) {
document.all['trainDivision'].style.left=Men uX+"px";
} else if (document.layer s) {
document.layers['trainDivision'].left = MenuX;
} else { //panic and try something desperate:
window['trainDivision'].left = MenuX;
}
[color=blue]
> }
> setTimeout('mov eTrain()',speed );
> }
> ///[/color]
else {
///
}

/L
--
Lasse Reichstein Nielsen - lrn@hotpop.com
DHTML Death Colors: <URL:http://www.infimum.dk/HTML/rasterTriangleD OM.html>
'Faith without judgement merely degrades the spirit divine.'

[Dennis M. Marks]

Re: Help With setTimeout

In article <iskkuo17.fsf@h otpop.com>, Lasse Reichstein Nielsen
<lrn@hotpop.com > wrote:
[color=blue]
> "Dennis M. Marks" <denmarks@dcsi. net> writes:
>[color=green]
> > There is no problem with the following function.[/color]
>
> I can see some ;)
>[color=green]
> > I want to insert code at the point that the function does not
> > repeat. I was pretty sure that it could be inserted at the /// but
> > that repeats with every loop.[/color]
>
> Either put it after an "else" or put a return after the call to
> "setTimeout ".
>[color=green]
> > What happens after the setTimeout?[/color]
>
> The next line, just as any other function call. Calls to "setTimeout "
> returns instantly, and evaluation continues.
>
>
> Now for the comments:[/color]
(snip>
Thank you for the information and comments. This was part of a script
that I found on a javascript site. It was for a slide out menu. I am
modifing but not rewriting it to have a train move across the screen
and stop in the middle. I wanted to say "all aboard" when it stopped
and needed a place to insert the code.

I have not been able to find a way to have a sound start using a
script. Can anyone help? I will use "else" if I can find code.

--
Dennis M. Marks


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