Subj : JS_CallFunctionName doesn't work ...
To   : netscape.public.mozilla.jseng
From : Gregory Sovaridis
Date : Thu May 13 2004 05:52 pm

Hi there,

Quite new to js, I'm trying to execute a javascript function (from a file)
from my C code.
I'm using the JS_CallFunctionName which returns me always 0 (zero).

I'm pretty confident it should do it but my boss doubt this library
currently works!
Any idea ?

/*****************************************/
test.js file contains:
function addValues(a,b)
{
   result = a + b;
   return result;
}
/*****************************************/
I initialize the js API this way:

JSClass global_class = { "global",
                         0,
                         JS_PropertyStub,
                         JS_PropertyStub,
                         JS_PropertyStub,
                         JS_PropertyStub,
                         JS_EnumerateStub,
                         JS_ResolveStub,
                         JS_ConvertStub,
                         JS_FinalizeStub
                       };
char              szJSFile    [_256B];
JSVersion         version;
JSRuntime         *rt;
JSContext         *cx;
JSObject          *glob, *it;
JSBool            builtins;
JSClass           *clasp;
JSScript          *jsp;
JSBool            result;
jsval             jsargs[2];
jsval             jretval;
jsint             number1            = 5;
jsint             number2            = 2;

clasp = &global_class;
strcpy(szJSFile, "test.js");

rt = JS_NewRuntime(8L * 1024L * 1024L);
cx = JS_NewContext(rt, 8192);
glob = JS_NewObject(cx, clasp, NULL, NULL);
builtins = JS_InitStandardClasses(cx, glob);
jsp = JS_CompileFile(cx, glob, szJSFile);

jsargs[0] = INT_TO_JSVAL(number1);
jsargs[1] = INT_TO_JSVAL(number2);

result = JS_CallFunctionName(cx, glob, "addValues", 2, jsargs, &jretval);

/*****************************************/

.