计算机毕业设计参考 豆瓣图书小程序app 微信小程序源码下载

var requests = require('../../requests/request.js'); var utils = require('../../utils/util.js'); //刷新动态球颜色 var iconColor = [ '#42BD56', '#31A040' ]; Page({ data: { scrollHeight: 0, //scroll-view高度 pageIndex: 0, //页码 totalRecord: 0, //图书总数 isInit: true, //是否第一次进入应用 loadingMore: false, //是否正在加载更多 footerIconColor: iconColor[0], //下拉刷新球初始颜色 pageData: [], //图书数据 searchKey: null //搜索关键字 }, //页面显示获取设备屏幕高度，以适配scroll-view组件高度 onShow: function () { wx.getSystemInfo({ success: (res) => { console.log(res) this.setData({ scrollHeight: res.windowHeight - (100 * res.windowWidth / 750) //80为顶部搜索框区域高度 rpx转px 屏幕宽度/750 }); } }) }, //搜索输入框输入取值 searchInputEvent: function (e) { this.setData({ searchKey: e.detail.value }); }, //搜索按钮点击事件 searchClickEvent: function (e) { if (!this.data.searchKey) { return; } this.setData({ pageIndex: 0, pageData: [] }); requestData.call(this); }, //下拉请求数据 scrollLowerEvent: function (e) { if (this.data.loadingMore) return; requestData.call(this); }, //跳转到详细页面 toDetailPage: function (e) { var bid = e.currentTarget.dataset.bid; //图书id [data-bid] wx.navigateTo({ url: '../detail/detail?id=' + bid }); } }); /** * 请求图书信息 */ function requestData() { var _this = this; var q = this.data.searchKey; var start = this.data.pageIndex; this.setData({ loadingMore: true, isInit: false }); updateRefreshBall.call(this); console.log(start) requests.requestSearchBook({ q: q, start: start }, (data) => { if (data.total == 0) { //没有记录 _this.setData({ totalRecord: 0 }); } else { _this.setData({ pageData: _this.data.pageData.concat(data.books), pageIndex: start + 1, totalRecord: data.total }); } }, () => { _this.setData({ totalRecord: 0 }); }, () => { _this.setData({ loadingMore: false }); }); } /** * 刷新下拉效果变色球 */ function updateRefreshBall() { var cIndex = 0; var _this = this; var timer = setInterval(function () { if (!_this.data['loadingMore']) { clearInterval(timer); } if (cIndex >= iconColor.length) cIndex = 0; _this.setData({ footerIconColor: iconColor[cIndex++] }); }, 100); }