不懂的大家看我的博客哦,我专门写了段模拟的小demo:
http://blog.csdn.net/sinat_26706135/article/details/44961461
http://blog.csdn.net/sinat_26706135/article/details/44961461
2015-04-09
foo..find('.bar').css('background-color', 'green'); 应该改为 $('ul.first').find('.bar').css('background-color', 'green');
2015-04-08