微信在线答题小程序，基于云开发搭建

const app = getApp() const db = wx.cloud.database() const dbQuestions = db.collection('tiku_exams') const util = require("../../utils/util"); const _ = db.command let titles = [] //题库 Page({ data: { hour:'00', minute:'00', second:'00', showScore:false,//是否展示成绩 testTime:0,//考试用时 errorOptions:[], showAnswer:false, percent: 0, total: 0, isSelect: false, subject: null, userSelect: '', userScore: 0, //用户答对了几道题 totalScore: 0, //用户总得分 totalError: 0, //用户答错几道题 current: 1 //从第一道题开始 }, onUnload(){ console.log('执行了') titles = [] }, getQuestionsList(type1,type2){ wx.setNavigationBarTitle({ title: type2 + '答题', }) dbQuestions.where({ type: type1, type2: type2 }).skip(titles.length).get() .then(res => { console.log("题库", res) if(res.data.length!=0){ titles = titles.concat(res.data) this.getQuestionsList(type1,type2) }else{ let subject = titles[0] console.log('subject', subject) this.setData({ subject, total: titles.length }) //生成考试id this.setData({ testId: util.formatTime(new Date()) + this.data.subject.type + '考试' }) } }) }, //一进入页面就会执行的生命周期 onLoad(e) { //开始计时 this.time60() console.log('答题页', e) if (e.type1 && e.type2) { //按类型答题 this.getQuestionsList(e.type1,e.type2) } else { //随机题库 wx.setNavigationBarTitle({ title: '随机答题', }) dbQuestions.aggregate() .sample({ size: app.globalData.randomNum //随机获取几道题，比如这里随机返回5道题 }) .end() .then(res => { console.log("随机题库", res) titles = res.list let subject = titles[0] this.setData({ subject, total: titles.length }) //生成考试id this.setData({ testId: util.formatTime(new Date()) + this.data.subject.type + '考试' }) }) } // 答题时提示用需要登陆注册才可以参加排名 // 发布之前先判断是否登录和注册 if (!app.globalData.userInfo || !app.globalData.userInfo.name) { wx.showModal({ title: "需要参加积分排名吗？", content: '只有授权登陆并注册用户后才可以参与积分排名，取消后本次答题不计入积分排行里', success: res => { if (res.confirm) { wx.switchTab({ url: '/pages/me/me', }) } } }) } }, //用户选择 selectClick(e) { console.log(e.detail.value) this.setData({ userSelect: e.detail.value }) }, //提交答题,并切换到下一题 submit() { this.setData({ showAnswer:false }) //1，获取用户选项并判空 let userSelect = this.data.userSelect if (!userSelect || userSelect.length < 1) { wx.showToast({ icon: 'none', title: '请做选择', }) return } //2,如果用户有选择，就更新进度条 let currentNum = this.data.current //更新进度条 this.setData({ percent: (currentNum / titles.length * 100).toFixed(1) }) //3，判断用户是否答对 console.log('用户选项', userSelect) console.log('正确答案', this.data.subject.answer) if (userSelect instanceof Array) { //多选的时候，把选项转字符串 console.log('是数组') userSelect = userSelect.sort().toString() } if (this.data.subject.answer.sort().toString() == userSelect) { console.log('用户答对了第' + currentNum + "道题") this.setData({ userScore: this.data.userScore + 1 }) } else { //4,记录用户答错的题，方便用户查漏补缺 let subjectNow = this.data.subject subjectNow.userSelect = userSelect this.data.errorOptions.push(subjectNow) let temp = {} Object.assign(temp, subjectNow) delete temp._id let userInfo = wx.getStorageSync('user') || {} temp.nickName = userInfo && userInfo.nickName ? userInfo.nickName : '未登陆用户' console.log('临时错题', temp) //设置考试id temp.testId = this.data.testId // 添加用户错题到数据库 db.collection('tiku_test_errors').add({ data: temp }).then(res => { console.log('添加错题到数据库', res) }) console.log('错题', subjectNow) } // 5,在答完最后一道题的时候，对用户进行打分 if (currentNum + 1 > titles.length) { let totalScore = this.data.userScore console.log('用户一共答对了' + totalScore + "道题") console.log('用户错题集', this.data.errorOptions) this.setData({ totalScore: totalScore, totalError: this.data.errorOptions.length, hideButton: true //最后一题时隐藏按钮 }) wx.showToast({ icon: 'none', title: '已经最后一道啦', }) // this.addScore(totalScore) return } let subject = titles[currentNum] this.setData({ userSelect: '', subject, current: currentNum + 1, isSelect: false, }) }, //去查看错题集 seeError() { console.log('点击了查看错题集') //跳页 wx.switchTab({ url: '/pages/errorList/errorList' }) }, //添加积分 addScore(score) { // 发布之前先判断是否登录和注册,如果没有就不计分 if (!app.globalData.userInfo || !app.globalData.userInfo.name) { return } db.collection('tiku_users').doc(app.globalData.openid).update({ data: { score: _.inc(score) } }).then(res => { wx.showToast({ title: '积分生效', }) }) }, //查看答案 ok(){ //1，获取用户选项并判空 let userSelect = this.data.userSelect if (!userSelect || userSelect.length < 1) { wx.showToast({ icon: 'none', title: '请做选择', }) return } this.setData({ showAnswer:true }) }, //提交考试 testEnd(){ //1，获取用户选项并判空 let userSelect = this.data.userSelect if (!userSelect || userSelect.length < 1) { wx.showToast({ icon: 'none', title: '请做选择', }) return } wx.showLoading({ title: '提交中', mask:true }) this.setData({ showScore: true, //最后一题时隐藏按钮 testTimeMin: this.data.testTimeMin, testTimeSec: this.data.testTimeSec, }) //添加积分 this.addScore(this.data.totalScore) //停止倒计时 clearInterval(this.data.timeInterval) wx.cloud.database().collection('tiku_test_results').add({ data:{ faceImg:app.globalData.userInfo.avatarUrl, nickName:app.globalData.userInfo.nickName, testId:this.data.testId, time:this.data.testTimeMin + '分' + this.data.testTimeSec + '秒', totalError:this.data.totalError,//答错xx道 total:this.data.total//答错xx道 } }).then(res=>{ wx.hideLoading({ success: (res) => { wx.showToast({ title: '提交成功', }) wx.redirectTo({ url: '/pages/test/testResult/testResult?totalError=' + this.data.totalError + '&testTimeMin=' + this.data.testTimeMin + '&testTimeSec=' + this.data.testTimeSec + '&totalScore=' + this.data.totalScore, }) }, }) }) }, //倒计时1小时 time60(){ var that