$(".ui-dialog-buttonpane").find(".ui-button:[data-button-type=‘cancel‘]")
$(".ui-dialog-buttonpane").find(‘button:[role="button"][clickonce="true"][data-button-type="request"]‘)
$(".ui-dialog-buttonpane").find(‘button:[role="button"][clickonce="true"][data-button-type=:request:]‘.replace(/:request:/,‘cancel‘))
$(‘input:radio[name="snmp_version"]:checked‘)
$(‘#Editor_Edit_Advanced_Contents input:checkbox:checked‘)
$(‘#Editor_Edit_Advanced_Contents‘).find(‘input:checkbox:checked‘)
$(‘#Editor_Edit_Advanced_Contents‘).find(‘input:checkbox:checked‘).length
原文：http://www.cnblogs.com/angelfan/p/4517041.html