Creating javascript objects in LCD 8.2

Question

Hi,
a year ago there was a posting "creating javascript objects in LCD 7.0.1 " http://forums.adobe.com/message/1360679#1360679
I tried this in Designer 8.2 and failed! Does anyone know why?
I set up a scriptObject "mydate" which contains:
function createDate(sDay, sMonth, sYear) {
    xfa.host.messageBox( sDay + "." + sMonth + "." + sYear);
    var oDateObject = new Object();
    oDateObject .day = sDay;
    oDateObject .month = sMonth;
    oDateObject .year = sYear;
    return oDateObject;
    } // function createDate()
function setToCurrentDate () {
    var dateToday = new Date();
    this.day = (dateToday.getDate() < 10) ? "0" + dateToday.getDate() : dateToday.getDate();
    this.month = (dateToday.getMonth() < 10) ? "0" + dateToday.getMonth() : dateToday.getMonth();
    this.year = 1900 + dateToday.getYear();
    } // setToCurrentDate ()
function display() {
    xfa.host.messageBox("Display: " + this.day + "." + this.month + "." + this.year);
    return "" + this.day + "." + this.month + "." + this.year ;
function display2() {
    with (this) xfa.host.messageBox("Display: " + day + "." + month + "." + year);
In my field's Enter-Event I wrote:
    var dateToday = mydate.createDate("01","01","2000");
    dateToday.display2();
    xfa.host.messageBox(dateToday.display());
    dateToday.setToCurrentDate();
The problem is, that I get the message: "dateToday.display2 is not a function"
I cannot call any of dateToday's methods.
Actually I would have expected this message, as there is no scriptObject with the name "dateToday". But apparently that worked in version 7.0.1.
How can we use some object oriented programming with Adobe's JavaScript?
How can we use objects in the scriptObjects?
Did anyone find that out already? I'd appreciate every hint and help!
Ulrich

Answer 1

Hi Ulrich
I don't think the Designer Script Objects are implemented as JavaScript objects but I think you can acheive what you want with something like;
form1.#variables[0].myDateScript - (JavaScript, client)
function myDate(sDay, sMonth, sYear)
    this.day = sDay;
    this.month = sMonth;
    this.year = sYear;
    this.setToCurrentDate = function(oDateObject)
         this.day = (dateToday.getDate() < 10) ? "0" + dateToday.getDate() : dateToday.getDate();
         this.month = (dateToday.getMonth() < 10) ? "0" + dateToday.getMonth() : dateToday.getMonth();
         this.year = 1900 + dateToday.getYear();  
     this.display = function()
         return "" + this.day + "." + this.month + "." + this.year ;
function newMyDate(sDay, sMonth, sYear)
     return new myDate(sDay, sMonth, sYear);
So you could then reference the myDate object with;
xfa.host.messageBox(myDateScript.newMyDate(
"01","01","2000").display());
John Brinkman has a post on this at http://blogs.adobe.com/formfeed/2009/09/script_objects_deep_dive.html and before that post my previous method was discribed in this forum at http://forums.adobe.com/message/1964601
Also attached is my sample to test the code above.
Bruce