Subj : Re: How to access the properites.
To   : Chris Du
From : Brendan Eich
Date : Sat Jan 29 2005 01:51 pm

Chris Du wrote:
> I used the following method to define an object and its properties & 
> methods:
> *    it = JS_DefineObject(cx, glob, "it", &its_class, NULL, 0);
>     if (!it)
>         return 1;
>     if (!JS_DefineProperties(cx, it, its_props))
>         return 1;
>     if (!JS_DefineFunctions(cx, it, its_methods))
>         return 1;


OK, *this* message belongs in the jseng newsgroup, because you are not
asking about document.all, or anything to-do with the Document Object
Model.  See newsgroup: and followup-to: headers, again.


> *
> If I use the following code:
> *print(it.color); // color is one of the properties.*
> *print(it.item()); // item is one of the methods.*
>  
> js.exe prints out
> *undefined*
> *[object It]*
>  
> My *question* is why js.exe can not find object "it"'s properties like 
> "color"?
> BTW, [object It] is the correct message.


The js.exe program finds it.color just fine, but it.color has no
predefined value, so defaults to undefined.

/be

>  
> The definition of "it"'s properties are as follows:
> *enum its_tinyid {
>     ITS_COLOR, ITS_HEIGHT, ITS_WIDTH, ITS_FUNNY, ITS_ARRAY, ITS_RDONLY, 
> ITS_MY
> };*
> ** 
> *static JSPropertySpec its_props[] = {
>     {"color",           ITS_COLOR,      JSPROP_ENUMERATE},
>     {"height",          ITS_HEIGHT,     JSPROP_ENUMERATE},
>     {"width",           ITS_WIDTH,      JSPROP_ENUMERATE},
>     {"funny",           ITS_FUNNY,      JSPROP_ENUMERATE},
>     {"array",           ITS_ARRAY,      JSPROP_ENUMERATE},
>     {"rdonly",          ITS_RDONLY,     JSPROP_READONLY},
>     {0}
> };*
> Thank you very much.

.