小程序订单页面下拉刷新和上拉加载

/**
* 页面的初始数据
*/
data: {
orderslist: [],
page: 0,
totalPage: 0,

},

/**
* 生命周期函数--监听页面加载
*/
onLoad: function (options) {
let data={
_ajax:1
}
this.getListData(data);
},
/**
* 页面相关事件处理函数--监听用户下拉动作
*/
onPullDownRefresh: function () {
let data = {
_ajax: 1,
wechat_openid: wechat_openid
};
this.setData({
orderslist: []//清空数据
});
this.getListData(data);//获取数据
//
setTimeout(()=>{
wx.stopPullDownRefresh();
wx.hideLoading();
},2000);
},

/**
* 页面上拉触底事件的处理函数
*/
onReachBottom: function () {
console.log(3333333);
let data = {
_ajax: 1,
wechat_openid: wechat_openid,
page: this.data.page + 1,
};
this.getListData(data);
},

//获取数据方法开始
getListData(data) {

console.log("data.page", data.page);
console.log("data.totalPage", this.data.totalPage);
if (data.page > this.data.totalPage) {
wx.showToast({
title: '无新内容'
});
return false;
}
wx.showLoading({ title: '加载中！' });
let orderslist = this.data.orderslist;
for(let i= 0;i<10;i++){
let data = {
"order": i + orderslist.length,
"state":"未发货",
"imgUrl":"http://wx1.sinaimg.cn/mw690/0071poYXly1fn6wez5vjxj303w03wdfn.jpg",
"name":"辛辛熊婴儿纸尿裤试用装S码",
"price":"9.90",//单价
"sum":"1",
"prices":"9.90"//合计
};
orderslist.push(data);
}
this.setData({
orderslist: orderslist,
page: this.data.page+1,
totalPage:3
})
wx.hideLoading();