单项选择题
A.session中的userIDB.cookieC.requestD.application
A.var $obj =$(’ul li’);alert($obj.length());B.var $obj =$(’li’);alert($obj.length);C.var $obj =$(’#li’);alert($obj.length());D.var $obj =$(’#li’);alert($obj.length);
A. niceB. reniceC. dfD. ps