var myDoc = app.activeDocument; 
var myOriginalLayer = myDoc.activeLayer.name; 
 
var myQuelleLayer = app.activeDocument.layers.firstItem(); 
var myLayerItems = myQuelleLayer.allPageItems; 
for(i = 0; i < myLayerItems.length; i++) { 
 
app.select(myLayerItems[i], SelectionOptions.ADD_TO); 
} 
 
 
alert("«" + myOriginalLayer + "» hat "+ app.selection.length + " Objekte." ); 

main(); 
 
function main() { 
	var doc = app.activeDocument; 
	var spread = doc.layoutWindows[0].activeSpread; 
	var items = spread.allPageItems; 
	var objects = new Array(); 
	var stylenames = new Array(); 
	var osname; 
	for (var n = 0; n < items.length; n++) { 
		osname = items[n].appliedObjectStyle.name; 
		if (objects[ osname ] == undefined) { 
			objects[ osname ] = new Array(); 
			stylenames.push( osname ); 
		} 
		objects[ osname ].push( items[n] ); 
	} 
	var meldung = "Anzahl der Objekte nach Objektformat\r"; 
	for (var n = 0; n < stylenames.length; n++) { 
		meldung += stylenames[n] + ": \t" + objects[ stylenames[ n ] ].length+ "\r"; 
	} 
	meldung += "\r\rEs werden die Objekte \"" + stylenames[0] + "\" markiert."; 
	app.select( objects[ stylenames[0] ] ); 
	alert( meldung ); 
} 

var alter_der_jungs = new Array(); 
alter_der_jungs[ "Detlef"] = 12 
alter_der_jungs["Heinz"] = 13 
alter_der_jungs["Karl"] = 11; 
alert( "Detlefs Alter: " + alter_der_jungs["Detlef"]); 

var myDoc = app.activeDocument;  
var myActiveLayerName = myDoc.activeLayer.name; 
var myActiveLayer = myDoc.activeLayer; 
 
// var spread = myDoc.layoutWindows[0].activeSpread;  
// var items = spread.allPageItems;  
 
 
var myLayerItems = myActiveLayer.allPageItems;  
for(i = 0; i < myLayerItems.length; i++) {  
 
app.select(myLayerItems[i], SelectionOptions.ADD_TO);  
}  
  
  
alert(myActiveLayerName + ": \t"+ app.selection.length + " Objekte" );