小程序之列表分页加载

Page({
    data: {
        current_address: "",
        wc_guide_info:[],
        current_page:1,          //当前页码
        sum_page:1               //总页码，后台会返回
    },
    getwcinfo: function (){
        var that=this;
        wx.showLoading({
            title: '加载中',
        })
        wx.request({
            url: app.globalData.url + 'index.php/api/Home/index',
            data:{
                type:1,
                lng: app.globalData.location.longitude,
                lat: app.globalData.location.latitude,
                page: that.data.current_page,
                page_size:8  //每页加载的数据，建议数字大一点，数字小了第一页数据没有到底部，不足以触发onReachBottom函数，不能加载第二页数据
            },
            success:function(data){
                wx.hideLoading();
                if (data.data.status==200){
                    if (that.data.current_page==1){
                        that.setData({
                            wc_guide_info: data.data.data.res,
                            sum_page: data.data.data.totalpage
                        })
                    }else{
                        var new_page_cont = that.data.wc_guide_info;
                        var current_guide_list = data.data.data.res;
                        for (var i = 0; i < current_guide_list.length;i++){
                            new_page_cont.push(current_guide_list[i])
                        }
                        that.setData({
                            wc_guide_info: new_page_cont
                        })
                    }
                    
                }else{
                    wx.showToast({
                        title: data.data.error,
                        icon: 'loading',
                        duration: 1000
                    });
                }
            },
            fail:function(){
                wx.hideLoading();
                wx.showToast({
                    title: '请求失败',
                    icon:'loading',
                    duration:1000
                })
            }
        })
    },
    onReachBottom: function (e){
        var that=this;
        var current_page=null;
        current_page = that.data.current_page+1;
        that.setData({
            current_page: current_page
        })
        if (current_page <= that.data.sum_page){
            wx.showToast({
                title: '加载中！',
                icon: 'loading',
                duration:1000
            })
            that.getwcinfo();
        } else if (current_page > that.data.sum_page){
            wx.showToast({
                title: '数据已加载完',
                icon: 'loading',
                duration: 1000
            });
            return;
        }
        
    }