Cp4 AS3 - using Javascript to generate a text string

Question

I'm a complete Javascript beginner, so please forgive me if this is a stupid question!
I need to generate a pseudo random text string. I'm using the unpatched version of Cp4, AS3, Internet Explorer 7
I've had a look at Captivate.Dev.com and the w3schools site to try to understand how to pass variables & basic javascript, and this is what I've come up with:
var objCP = document.Captivate;
function GenerateCode(){
var rngen = new Array(8);
var tgits = new Array(8);
var cdrtn="";
var lpdx=0;
var mulier=1;
for (lpdx=0;lpdx<=5;lpdx++){
rngen[lpdx]=(Math.floor(Math.random()*9)+1);
mlier=mulier*(rngen[lpdx]);
tgits[lpdx]=rngen[lpdx]+"";
cdrtn=cdrtn+tgits[lpdx];
rngen[6]=(mlier%17)%10;
rngen[7]=(mlier%13)%10;
for (lpdx=6;lpdx<=7;lpdx++)
tgits[lpdx]=rngen[lpdx]+"";
cdrtn=cdrtn+tgits[lpdx];
objCP.cpEISetValue('MyJavascriptVariable', cdrtn);
GenerateCode();
I've created a user variable called MyJavascriptVariable , put the code above in the On Slide Enter, Execute Javascript window on the first slide, and on the second a simple caption box showing the variable contents.
However, when I press F12 I get an orange playbar at the top of the window, and in the middle the preloader and the captionbox (without the return value) flickering. i.e. classic sign of wrong AS version.
If I change to AS2 the movie progresses ok, but the value the caption reports back for MyJavascriptVariable is blank.
I know my core code works correctly - if I use the w3school's tryit editor with the code after the function declaration up to the closing curly before the objcCP line, with an addeded document.write to show the variable it works fine.
It's clearly something to do with the way I'm declaring/passing the function or the way Cp runs the javascript. But what?
Any help greatfully appreciated!
Thanks

Answer 1

Hi Jon,
You are right... it works great on the W3Schools site.  Although in Cp, you ran into quite an issue using the modulus operater (%).  Looks like Cp needs the encoded version of this operator which is (%25).  Also, if you're using Cp4, then when you go to set the caption, you want to use objCP.cpSetValue();  Cp5 uses cpEISetValue.  I also try to use single quotes when working with strings.
Here's the updated code:
var objCP = document.Captivate;
function GenerateCode() {
var rngen = new Array(8);
var tgits = new Array(8);
var cdrtn='';
var lpdx = 0;
var mulier=1;
    for (lpdx=0; lpdx<=5; lpdx++){
        rngen[lpdx]=(Math.floor(Math.random()*9)+1);
        mlier=mulier*(rngen[lpdx]);
        tgits[lpdx]=rngen[lpdx]+'';
        cdrtn=cdrtn+tgits[lpdx];
rngen[6]=(mlier %25 17) %25 10;
rngen[7]=(mlier %25 13) %25 10;
   for (lpdx=6; lpdx<=7; lpdx++){
        tgits[lpdx]=rngen[lpdx]+'';
        cdrtn=cdrtn+tgits[lpdx];
objCP.cpSetValue('MyJavascriptVariable', cdrtn);
GenerateCode();
This looks like some really crazy math.
Let me know if this helps.
Jim Leichliter