Copy from Doc1 and paste in Doc2

Question

HI ALL,
Requirement:
My requirement is copy all pageitem from Source Document(doc1) and paste in Target Document(doc2).
[Note: doc1 contains many pages]
Trying Code:
It will paste Ist page only. Not repeated for next process.
var doc1 = app.documents[0];
var doc2 = app.documents[1];
for(i=0; i<doc1.pages.length; i++)
    //var myPages = Pages[i]
    //alert(Pages[i])
    doc1.pages[i].pageItems.everyItem().select(SelectionOptions.ADD_TO);
    app.copy ();
    app.activeDocument = doc2;
    app.pasteInPlace ();
Kindly check and advise.
Thanks in advance
BEGINNER

Answer 1

Try something like this:
var doc1 = app.documents[0];
var doc2 = app.documents[1];
for(i=0; i<doc1.pages.length; i++)
    if(doc2.pages.length < i+1){
        doc2.pages.add();
    //alert(Pages[i])
    doc1.pages[i].pageItems.everyItem().duplicate(doc2.pages[i]);