$(window).scroll(function () {    var height = $(document).height(); //页面的高度    var keheight = $(window).height(); //浏览器可视的高度    var sheight = $(document).scrollTop(); //滚动的高度    var num = $(‘.pro_list a‘).length;    if (height <= keheight + sheight) {        $.post(‘/index.php/ajax-addlist.html‘, { type: ‘class‘, id: ‘102‘, num: num }, function (data) {            if (data =http://www.mamicode.com/= ‘1‘) {>