Can't Return any values from Functions

[Zhichun Pu]

Hi guys,

I can't seem to get anything returned from functions.

If I use the <script src = ... > command, nothing works. But if I
define the functions locally within the file, then it works.

Something simple:

function abc() { return 99; }

If I tried to access this function by placing it inside a .js file,
and then including it, it returns "undefined" . Everything else works
except for returned values...

If I define this function locally, it returns correctly the value of
99.

What is going on?? This is so weird.

Zhichun

[Grant Wagner]

Re: Can't Return any values from Functions

Zhichun Pu wrote:
[color=blue]
> Hi guys,
>
> I can't seem to get anything returned from functions.
>
> If I use the <script src = ... > command, nothing works. But if I
> define the functions locally within the file, then it works.
>
> Something simple:
>
> function abc() { return 99; }
>
> If I tried to access this function by placing it inside a .js file,
> and then including it, it returns "undefined" . Everything else works
> except for returned values...
>
> If I define this function locally, it returns correctly the value of
> 99.
>
> What is going on?? This is so weird.
>
> Zhichun[/color]

Without more information it's hard to know what the problem is. However,
one mistake some people make is to include <script></script> tags in
their external .js file. The .js file should only contain JavaScript, it
should contain no HTML tags or comments.

So if your inline code is:

<script type="text/javascript">
<!--
function abc() { return 99; }
//-->
</script>

Then the external .js file should contain only:

function abc() { return 99; }

--
| Grant Wagner <gwagner@agrico reunited.com>

* Client-side Javascript and Netscape 4 DOM Reference available at:
*

http://devedge.netscape.com/library/manuals/2000/javascript/1.3/reference/frames.html

* Internet Explorer DOM Reference available at:
*

http://msdn.microsoft.com/workshop/author/dhtml/reference/dhtml_reference_entry.asp

* Netscape 6/7 DOM Reference available at:
* http://www.mozilla.org/docs/dom/domref/
* Tips for upgrading JavaScript for Netscape 6/7 and Mozilla
* http://www.mozilla.org/docs/web-deve...upgrade_2.html

[Zhichun Pu]

Re: Can't Return any values from Functions

I tried writing a few more test scripts and they all worked.... maybe
it was the script I was using that didn't work.

function alertSize() {
var myWidth = 0, myHeight = 0;
if( typeof( window.innerWid th ) == 'number' ) {
//Non-IE
myWidth = window.innerWid th;
myHeight = window.innerHei ght;
} else {
if( document.docume ntElement &&
( document.docume ntElement.clien tWidth ||
document.docume ntElement.clien tHeight ) ) {
//IE 6+ in 'standards compliant mode'
myWidth = document.docume ntElement.clien tWidth;
myHeight = document.docume ntElement.clien tHeight;
} else {
if( document.body && ( document.body.c lientWidth ||
document.body.c lientHeight ) ) {
//IE 4 compatible
myWidth = document.body.c lientWidth;
myHeight = document.body.c lientHeight;
}
}
}
window.alert( 'Width = ' + myWidth );
window.alert( 'Height = ' + myHeight );
}

I pulled it off a website. It's supposed to get the width and height
of a browser's window. I just did "return [myWidth, myHeight];" and it
didn't work. I tried to return a single value and that didn't work
either.

Maybe it also had to do with the DynAPI package I was using?
Javascript has changed so much since I last programmed in it....

Any comments + ideas would be greatly appreciated. Thanks to all those
who tried to help =)

Zhichun



schavager@hotma il.com (Zhichun Pu) wrote in message news:<e8fb36f7. 0307152041.bc7c 397@posting.goo gle.com>...[color=blue]
> Hi guys,
>
> I can't seem to get anything returned from functions.
>
> If I use the <script src = ... > command, nothing works. But if I
> define the functions locally within the file, then it works.
>
> Something simple:
>
> function abc() { return 99; }
>
> If I tried to access this function by placing it inside a .js file,
> and then including it, it returns "undefined" . Everything else works
> except for returned values...
>
> If I define this function locally, it returns correctly the value of
> 99.
>
> What is going on?? This is so weird.
>
> Zhichun[/color]