study_wxapp/pages/exam/do/index.js

import {
  formatSeconds
} from '../../../utils/util.js'

let app = getApp()
Page({
  data: {
    list: [],
    preList:["A","B","C", "D"],
    info:{},
    timer: null,
    doTime: 0,
    remainTime: 0,
    remainTimeStr: '',
    modalShow: false,
    result: {},
    startTime: "",
    timeOutShow: false
  },
  onLoad: function(options) {
    let groupId = +options.id||3
    let _this = this
    app.formPost('Exam.examStart', {groupId}).then(res => {
      let list = res.data.list.map(item=>{
        delete( item["select"])
        return item
      }).sort( (i,j) =>{
        return i.type > j.type?1:-1;
      })
      
      if (res.code ==200) {
        _this.setData({
          list: list,
          info: res.data.info,
          startTime: res.data.startTime,
          remainTime: res.data.info.duration
        });
        _this.timeReduce()
      }
    })
  },
  timeReduce() {
    let _this = this
    let timer = setInterval(function() {
      let remainTime = _this.data.remainTime
      if (remainTime <= 0) {
        _this.timeOut()
      } else {
        _this.setData({
          remainTime: remainTime - 1,
          remainTimeStr: formatSeconds(remainTime),
          doTime: _this.data.doTime + 1
        });
      }
    }, 1000)
    _this.setData({
      timer: timer
    });
  },
  onUnload() {
    clearInterval(this.data.timer)
  },
  returnRecord() {
    wx.reLaunch({
      url: '/pages/record/index',
    });
  },
  timeOut() {
    clearInterval(this.data.timer)
    this.setData({
      timeOutShow: true
    });
  },
  radioChange( e ){
    let index = e.currentTarget.dataset.index;
    let list = this.data.list
    list[index].select = +e.detail.value
    this.setData( {list} );
  },
  checkboxChange( e ){
    let index = e.currentTarget.dataset.index;
    let list = this.data.list
    list[index].select = e.detail.value.sort()
    this.setData( {list} );
  },
  formSubmit: function(e) {
    let _this = this
    let force = this.data.remainTime < 3;
    let isFinish = true;
    wx.showLoading({
      title: '提交中',
      mask: true
    })
    let info = this.data.info;
    let param ={};
    param.groupId = info.groupId;
    param.answers = [];
    param.result  = [];
    param.correct = 0;
    param.errIds = []
    param.counter = this.data.list.length
    param.groupName = info.title;
    param.useTime =  this.data.doTime
    param.duration = info.duration
    param.startTime = this.data.startTime;
    
    for( let i=0; i< this.data.list.length; i++){
        let item = this.data.list[i];
        param.answers.push( item.answerId );
        if( !item.select ){
          param.result.push(0);
        }else if( item.type ==1 || item.type == 3  ){
          param.result.push( parseInt(item.select) || 0)
        }else{
          param.result.push( parseInt(item.select.join("")) ||0 )
        }
        if( param.result[i] == item.result){
          param.correct += 1
        }else{
          param.errIds.push( item.answerId)
        }
        if( !item.select ) isFinish = false
    }
    if( !isFinish && !force){
      app.message("还未完成", 'error')
      wx.hideLoading()
      return 
    }

    if (this.data.timer) {
      clearInterval(this.data.timer)
    }
    param.result = param.result.join(",")
    param.answers = param.answers.join(",")
    app.formPost('Exam.ExamSubmit', param)
      .then(res => {
        if (res.code === 200) {
          _this.setData({
            modalShow: true,
            result:param,
          });
        } else {
          app.message(res.data, 'error')
        }
        wx.hideLoading()
      }).catch(e => {
        wx.hideLoading()
        app.message(e, 'error')
      })
  }
})