I found that copy file from one document library to other using jquery
$(document).ready(function () {
function handleDropEvent(event, ui) {
var draggable = $(ui.draggable);
var context = SP.ClientContext.get_current();
var web = context.get_web();
var lists = web.get_lists();
var _destinationlib = lists.getByTitle("My Documents");
context.load(web);
context.load(_destinationlib);
var currentLib = lists.getByTitle("Excel Library");
var currentItem = currentLib.getItemById(44);
context.load(currentItem);
var File = currentItem.get_file();
context.load(File);
context.executeQueryAsync(function (sender, args) {if (File != null) {var _destinationlibUrl = web.get_serverRelativeUrl() + _destinationlib.get_title() + '/' + File.get_name();
File.copyTo(_destinationlibUrl,true);
context.executeQueryAsync(function (sender, args) {},function (sender, args) {SP.UI.Notify.addNotification('Error copying file', false); SP.UI.Notify.removeNotification(notifyId); showError(args.get_message()); }); } }, function (sender, args) { alert('Error occured' + args.get_message()); } ); } });