微信小程序学习用：我的快递，快递单号，扫一扫二维码

let req = require( '../../requests/request.js' ); let util = require( '../../utils/util.js' )  Page({     data:{       radioValue: "",       radioName: "",       epxressLists: [],       saveExpressLists: [],       words: ["#","A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"],       selectedWord: "top",       wWidth: 0,       wHeight: 0,       isShowModal: false,       currentTop: 0,       obj: {},       animationError: {},       errorShow: false,       scale: 1,       expressObj: [],       searchInput: ''     },     onLoad(obj){       const wSize =  util.getWindowSize();       this.setData({wWidth: wSize.wWidth, wHeight: wSize.wHeight, scale: wSize.scale, obj});       this.getExpressLsit();     },     showModal(e) {       this.setDefault(e)       this.setData({isShowModal: true})     },     changeModalText(e) {       this.setDefault(e)     },     hideModal() {       this.setData({isShowModal: false})     },     setDefault(e){       const wWidth =  parseFloat(this.data.wWidth)       const currentTop = parseFloat(e.touches[0].clientY);       const startTop = (wWidth / 750) * 200;       const eachLen = (wWidth / 750) * 25;       let len = currentTop - startTop;       let selectedWord = [];       len = len / eachLen       len = parseInt(len)       this.setData({selectedWord: this.data.words[len], currentTop})     },     radioChange(e) {       const index = e.currentTarget.dataset.index.split("-")       const lists = this.data.epxressLists[index[0]]       const arr = lists.list[index[1]];       const obj = this.data.obj       this.setData({radioValue: arr.code, radioName: arr.name})       obj.key = arr.code       obj.name = arr.name       this.setData({obj})       this.goToDetails()     },     goToDetails(){       const unixTime = new Date().getTime()       const num =  this.data.obj.num       const key = this.data.radioValue       const name = this.data.radioName        const params = {         data: {tid: unixTime, companyCode: key, logisticCode: num},         method: 'GET'       }        util.showLoading("加载中...","loading", 10000)        req.getEpxressData(params, data => {                const status = parseInt(data.status)         const msg = data.msg || '数据查询异常，请稍后再试'          if(data.data === null) {           this.showError(msg)           return         }         const state = (data.data.state === null) ? data.data.state : parseInt(data.data.state)         const traces = data.data.traces          if(!data.data.success) {           this.showError(msg)           return         }         if(traces === null) {           this.showError('无该单号信息, 请确认单号')           return         }         if(state === null || state < 0) {           this.showError('无该单号信息, 请确认单号')           return         }         if(status !== 1){           this.showError(data.details)           return         }          if(status === 1 && !!data.data.success && !!traces && parseInt(state) > 0){           wx.redirectTo({url: '../details/details?num=' + num + '&key=' + key + "&name=" + name})         }       }, data => {       }, data => {         util.hideToast()       })     },     getExpressLsit() {       const params = {         data: {},         method: 'GET'       }        req.getEpxressList(params, data => {         const lists = data         const arr = lists.data         let epxressLists = []         const expressObj = []          for(let i = 0; i < arr.length; i ++) {           for(let val in arr[i]) {             for(let j = 0; j < arr[i][val].length; j ++) {               expressObj.push(arr[i][val][j])             }           }         }          this.setData({expressObj})          for(let i = 0; i < arr.length; i ++) {           for(let val in arr[i]) {             epxressLists[i] = {key: val, list:arr[i][val]}           }         }         this.setData({epxressLists, saveExpressLists: epxressLists})       })     },     inputChange(e) {       let searchInput = e.detail.value;       this.setData({searchInput})     },     clearNum() {       this.setData({searchInput: ''})     },     inputConfirm(e) {       let words = [];       let firstWord = e.detail.value;       let searchList = this.data.searchList;       firstWord = firstWord.replace(/(^s*)|(s*$)/g, "");       const expressObj = this.data.expressObj;        if(firstWord.length >= 2) {         firstWord = firstWord.substring(0,2);       }        for(let i = 0; i < expressObj.length; i ++) {         if(expressObj[i].name.indexOf(firstWord) > -1) {           this.setData({selectedWord: expressObj[i].code})           break;         }       }     },     selectWord(e) {       let firstWord = e.target.dataset.value       this.getOneList(firstWord)     },     getOneList(firstWord) {       if(!firstWord) return       firstWord = firstWord[0]       firstWord = firstWord.toUpperCase()       this.setData({selectedWord: firstWord})     },     showError(text) {       this.animateError(1)       this.setData({errorShow: true,errorText: text})       setTimeout(() => {         this.animateError(0)       }, 2000)       setTimeout(() => {         this.setData({errorShow: false})       }, 3000)     },     animateError(opacity) {       let animation = wx.createAnimation({           duration: 1000,           timingFunction: 'ease'       })       animation.opacity(opacity).step()       this.setData({         animationError:animation.export()       })      }  })