pc滚动到底部加载

滚屏自动加载

$(function() {  
                var winH = $(window).height(); //页面可视区域高度  
                var i = 1;  
                $(window).scroll(function() {  
                    var pageH = $(document.body).height();  
                    var scrollT = $(window).scrollTop(); //滚动条top  
                    var aa = (pageH - winH - scrollT) / winH;  
                    if (aa < 0.02) {  
                        $.getJSON("result.php", {page: i}, function(json) {  
                            if (json) {  
                                var str = "";  
                                $.each(json, function(index, array) {  
                                    var str = "<div class="single_item"><div class="element_head">";  
                                    var str = str + "<div class="date">" + array['date'] + "</div>";  
                                    var str = str + "<div class="author">" + array['author'] + "</div>";  
                                    var str = str + "</div><div class="content">" + array['content'] + "</div></div>";  
                                    $("#container").append(str);  
                                });  
                                i++;  
                            } else {  
                                $(".nodata").show().html("别滚动了，已经到底了。。。");  
                                return false;  
                            }  
                        });  
                    }  
                });  
            });  

2.

// 加载更多评价的函数
function loadMore(){
    $(".discussList").append('<div class=loading style=display:none;text-align:center;height:30px;line-height:30px;background:#fff;>加载中...</div>');//插入加载中的提示框
    var stop = true; //默认停止加载
    // 页数
    var page = 0;
    // 每页展示5个
    var size = 5;
    var bottomH=50;//距离底部多少像素开始加载
    $(window).scroll(function() {

        totalheight = parseFloat($(window).height()) + parseFloat($(window).scrollTop()+bottomH);
        if ($(document).height() <= totalheight) {
            if (stop == true) {
                stop = false;
                $(".loading").show();//显示加载中提示
                $.ajax({
                    url: 'http://ons.me/tools/dropload/json.php?page=' + page + '&size=' + size,
                    type: 'GET',
                    contentType: "application/json; charset=utf-8",
                    dataType: "json",
                    success: function(data) {
                        var dateLength = data.length; //数据长度
                        if (dateLength > 0) {
                            $(".loading").before('<div class=list><p class=listP1> <strong>132***313</strong> <img src=../img/xing3.png alt> <img src=../img/xing3.png alt> <img src=../img/xing3.png alt> <img src=../img/xing3.png alt><img src=../img/xing4.png alt><span>2017-12-26 13:20</span></p><p class=listP2>好吃，一直吃他家的</p></div>')
                            $('.loading').hide();
                            page++;
                            stop = true;
                        } else {
                            $(".loading").text("暂无数据")
                        }
                    },
                    error: function(xhr, type) {
                        $(".loading").hide();
                        alert("ajax error!");
                    }
                });
            }

        }
    });
}