For the first question, set 'cache' property to true to prevent reload page when select tab panel.
For the second question, when create panel with 'href' property, the remote page content will be loaded.
$('#p').panel({
title: 'My Panel',
href: xxxx.jsp
});
The code above will create a panel and send a remote request to load content.
Call 'refresh' will reload the panel content again, so a content page request will be sent to remote server again.
Thanks for your reply. But the first Bug, I set 'cache' property to true ,the Problem still. I try to change easyui version to '1.2.3' ,the Bug does not exist.