Script Label

Question

Hi All,
For my requirement i want to get a list of all page items with "id" value  in script label.
Script Label concept in entirely new for me.
Below script get the ID value of every page items in the active document.
But i dont know how to save all the values [alert(("ID:" + myPgItems) in the script label.
Trying script:
var myDoc = app.activeDocument
var myPageItems = myDoc.allPageItems
alert(myPageItems.length)
for(i=0; i<myPageItems.length; i++)
    var myPgItems = myPageItems[i].id
    alert("ID: " + myPgItems)
Please find the attachment for more information
Kindly give solution as soon.
Thanks in advance
BEGINNER

Answer 1

Hi Marc/All,
I  want to get master spreads pageitems  as well.
But the given script get pageitems from spreads not from Master Spreads.
function createList(/*PageItem[]*/a)
    var i = a.length,
        r = {};
    while( i-- ){ r['_'+a[i].id]=null; }
    return r;
function compareList(o1, o2)
    var k, a=[], z=0;
    for( k in o1 )
        if( o2.hasOwnProperty(k) ) continue;
        a[z++] = k.substr(1); // as k is in the form '_id'
    return a;
function showReport(oldList, newList)
    var r = [],
        a;
    r[0] = (a=compareList(newList, oldList)).length ?
        ("NEW ids: " + a.join(" | ")) :
        ("No NEW item.");
    r[1] = (a=compareList(oldList, newList)).length ?
        ("REMOVED ids: " + a.join(" | ")) :
        ("No REMOVED item.");
    alert( r.join("\r") );
// MAIN
var doc = app.activeDocument,
    s = doc.label,
    oldList = s && (new Function('return '+s)()),
    newList = createList(doc.allPageItems);
if( oldList ) showReport(oldList,newList);
doc.label = newList.toSource();
alert( "Data properly saved." );
Please can anyone help me.
Thanks in advance
BEGINNER