一直记错jQuery on的用法
http://api.jquery.com/on/
$( "#dataTable tbody tr" ).on( "click", function() {
alert( $( this ).text() );
});
$( "#dataTable tbody" ).on( "click", "tr", function() {
alert( $( this ).text() );
});
原文:http://www.cnblogs.com/wzktravel/p/4030876.html