基于java开发的题库小程序

var request = require('../../utils/request').request; var attachAns = require('../../utils/util').attachAns; var WrongRecord = require('../../utils/wrong-record'); var pending = false, submitted = false; var index = 0, doneMax = 0, answer = [], chapter = {}; var app = getApp(); Page({ data: { problems: [], problem: { problem: "", images: [], choices: [], answer: [], analysis: '' }, done: 0, total: 0, wrong: 0, // 答案是否正确 right: false, // 是否提交题目 submitted: false }, onLoad: function() { // var category = app.getCategory(); chapter = app.getChapter(); // console.log(chapter); wx.setNavigationBarTitle({ title: chapter.name }) this.setData({ total: chapter.count }); // 获取完成题数 var done = wx.getStorageSync('cnt_done_' + chapter._id); // console.log(done, chapter.count); if (done) { done = parseInt(done); doneMax = done; // 全部完成时显示最后一题 if (done >= chapter.count) done = chapter.count-1; } else { doneMax = done = 0; } this.setData({ done: parseInt(done) }); // 获取错题数 var wrong = wx.getStorageSync('cnt_wrong_' + chapter._id); if (wrong) { wrong = parseInt(wrong); } else { wrong = 0; } this.setData({ wrong: parseInt(wrong) }); // 从完成位置加载题目 var that = this; request({ url: `api/qbank/problem/${chapter._id}/${done}`, success: function(res) { // 选项数据格式处理 res = res.map(item => { var choices = item.choices; item.choices = []; for (var key in choices) { item.choices.push({ key: key, content: choices[key] }); } return item; }); // 存在后续题目 if (res.length > 0) { that.setData({ problems: res, problem: attachAns.call(that, res[0]) }); } } }); }, onUnload: function() { // console.log(submitted, doneMax); // 存入完成题数及错题数 if (submitted) doneMax++; if (doneMax > this.data.total) doneMax = this.data.total; wx.setStorageSync('cnt_done_' + chapter._id, doneMax.toString()); wx.setStorageSync('cnt_wrong_' + chapter._id, this.data.wrong.toString()); }, onShow: function() { // 初始化全局变量 index = 0; pending = false; submitted = false; chapter = app.getChapter(); }, checkboxChange: function(e) { answer = e.detail.value; if (this.data.problem.answer.length === 1) this.submit(); }, submit: function() { if (!this.data.problem._id) return; if (pending || submitted) return; submitted = true; // 答案对比 var answer1 = answer; var answer2 = this.data.problem.answer; answer1.sort(); answer2.sort(); if (answer1.toString() === answer2.toString()) { this.setData({ right: true }); } else { this.setData({ right: false, wrong: this.data.wrong + 1 }); // 加入错题本 WrongRecord.add(this.data.problem); } wx.setStorageSync('prob_ans_' + this.data.problem._id, JSON.stringify(answer1)); this.setData({ submitted: submitted }); }, // 上一题 prev: function() { if (pending) return; var data = this.data; if (data.done === 0) { wx.showModal({ title: '提示', content: '已到达第一题' }); return; } submitted = false; if (index > 0) { this.setData({ problem: attachAns.call(this, data.problems[--index]), done: data.done - 1 }); } else { // 获取题目 pending = true; var that = this; request({ url: `api/qbank/problem/prev/${chapter._id}/${data.done}`, success: function(res) { res = res.map(item => { var choices = item.choices; item.choices = []; for (var key in choices) { item.choices.push({ key: key, content: choices[key] }); } return item; }); if (res.length > 0) { index = index + res.length - 1, that.setData({ problems: [...res, ...data.problems], problem: attachAns.call(that, res[res.length - 1]), done: data.done - 1 }); } else { // TODO } pending = false; } }); } }, // 下一题 next: function() { if (pending) return; var data = this.data; // 获取题目 if (data.done + 1 >= data.total) { if (data.done + 1 === data.total) { doneMax: doneMax > data.done + 1 ? doneMax : data.done + 1; this.setData({ done: data.done + 1 }); } wx.showModal({ title: '提示', content: '已到达最后一题', complete: function() { wx.navigateBack({ delta: 1 }); } }); return; } submitted = false; if (data.problems.length > ++index) { this.setData({ problem: attachAns.call(this, data.problems[index]) }); } else { pending = true; var that = this; request({ url: `api/qbank/problem/${chapter._id}/${data.done + 1}`, success: function(res) { res = res.map(item => { var choices = item.choices; item.choices = []; for (var key in choices) { item.choices.push({ key: key, content: choices[key] }); } return item; }); if (res.length > 0) { that.setData({ problems: [...data.problems, ...res], problem: attachAns.call(that, res[0]) }); } else { // TODO } pending = false; } }); } doneMax = doneMax > data.done + 1 ? doneMax : data.done + 1; this.setData({ done: data.done + 1 }); } })