java javascript communication

[wduty]

This is really basic stuff. I am trying to call a method in an applet from a javascript. The applet method just returns a string. It works fine. It's simple. It took five minutes. HOWEVER, it works in every browser except one: Internet Explorer 5.0 on a Macintosh. I can't figure out why.

HTML applet code:
--------------------------
<applet code=&quot;excerpt.class&quot; width=&quot;274&quot; height=&quot;181&quot; name=theapplet></applet>


javascript function:
--------------------------
function callJava()
{
var test = document.theapplet.test()
document.theform.thefield.value=test;
}


applet method:
--------------------------
public String test()
{
String returnStr = &quot;&quot;;
for (int j=0; j<15;j++)
{
for (int i=0; i<15;i++)
{
if (theArray[ i ][j])
{
returnStr += 1;
}
else {returnStr += 0;}
}
}
return returnStr;
}


Anyone? Anyone?

 

[ackka]

My guess is that it has to do with the fact that the Document Object Model changes per operating System and browser. Take a look at

http://www.htmlguru.com

and the curious_eye tutorial on how to build cross platform cross browser code for javascript and dhtml. I can post the code if you cannot figure it out One other thing , it should be possible to call javascript functions from the applet. Applets can call functions by the use of the URL class, send me an email if your interested and i can send you then code...

later

 

[wduty]

Thanks for the response. I actually solved the problem another way.

I was trying to get a value from the applet to a form field in the HTML page using javascript. What I did instead was to get rid of the HTML form altogether submit the page from the applet directly using appletContext:

[red]try
[tab]{url = new URL(&quot;&#104;ttp://&#119;ww.blah.com/page.asp?gifpixels=&quot;+test()+&quot;&name=&quot;+name.getText()+&quot;&ID=&quot;+getParameter(&quot;ID&quot);}
catch (MalformedURLException e) { }
getAppletContext().showDocument(url,&quot;_parent&quot;[/red]

Works OK. This way I'm just sending the values in a querysring. It's simpler and less hacky though it could probably still be better some way or other. As for crossplatform DHTML code there's not really any DHTML going on here but I have a few questions about that regarding another problem. I'll email you.