jsonp: function(url, data, callback){            if( wfQuery.isFunction(data) ){                callback = data;                data = {};            }            var cbk_name = "wfQuery_" + +new Date;            data.__t = +new Date;            data.callback = cbk_name;            var _sc = doc.createElement('script');                _sc.src = url + '?' + wfQuery.param( data );            var sc = wfQuery(_sc);            wfQuery('body').append( sc );            window[cbk_name] = callback || function(){};            sc.on('load',function(){                delete window[cbk_name];                sc.remove();            });        }

　　这是wfquery中关于jsonp的简单实现，类似jquery。