Subj : problem on array
To   : netscape.public.mozilla.jseng
From : "lyg" <liyg@tech.coretek.com.cn>
Date : Thu Feb 12 2004 03:07 pm

Is there a way in SpiderMonkey to detect when a element of one Array  is
replaced by other value or one new element is set?

in another way, it is supposed that:
   var option1 = new Option(text1 , value1 ,defaultSelected1, selected1);
   var option2 = new Option(text2 , value2 ,defaultSelected2, selected2);
   var options = new Array(3);

   options[0] = option1;
   options[1] = option2;
   options[0] = new Options(new_text, new_value, new_def, new_sel);
my problem is :
   when a new element is set, i have to call my app's func1().
   when a element is replaced , i have to call my app's fun2().
so how i can do it? i have no way to hnow when I shall call func1()
or func2().

   i have a solution which i think badly.
it need to add some code into jsinterp.c

   case JSOP_SETELEM:
            rval = FETCH_OPND(-1);
            ELEMENT_OP(-2, CACHED_SET(OBJ_SET_PROPERTY(cx, obj, id,
&rval)));
            sp -= 2;
            STORE_OPND(-1, rval);
   /* add by lyg 2004.02.06*/
   if ( GetOptionAccessFlag() )
   {
      updateBrowserOptionList(obj, rval, JSVAL_TO_INT(id));
   }
   break;

  note:
      updateBrowserOptionList decide call func1 or func2 through the obj and
JSVAL_TO_INT(id)  params.

.