Undefined Variables

[Shadojack]

I've only recently started coding in Javascript in order to make my webpage more interactive and hopefully use it to find a better job.

Anyway I keep getting a "imageone Undefined" message.

In the scripting I have this


<script language=javasrcipt text="text/javascript">

if (document.images) {
imageone = new Image;
imagetwo = new Image;

imageone.src="bat1.gif";
imagetwo.src="bat2.gif";
}
</script>

When someone passes over a link the picture is supposed to change and then change back on a mouseout.

Any ideas?

[whammy]

Yes:

imageone = new Image;
imagetwo = new Image;

should be:

imageone = new Image();
imagetwo = new Image();

since you're instantiating a new instance of the built-in Image() object in javascript, you need the parentheses there.

[cheesebag]

Because it's a host constructor, the parentheses are optional. Is this a typo?

<script language=javasrcipt text="text/javascript">

Otherwise: let's see the rest of it.

[whammy]

That should be set in stone... I hate optional exceptions like that. Either make me use parentheses, or don't! :)

But good call on the typo!

P.S. It should only be:

<script type="text/javascript">

that is if you care about the WC3, and recommendations...

[cheesebag]

Yikes! I think they call that 'tunnel vision'. Missed that (interesting MIME type) completely. Nice call yourself, whammy. :D

[whammy]

Really all that matters at the moment is if it works.

I really do aspire to the most up-to-date coding, but until they get all the bugs worked out, and until browser makers decide to "conform" (and compliant code works in all browsers!), you just have to use what works. :)

[Shadojack]

Thanks cheesebag and whammy. That was the problem. Here I was concentrating on the code. Duh for me.