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Vue脚手架编写试卷页面功能

脚手架(vue-cli)

  (一)什么是脚手架

    概念:是一种用于快速开发Vue项目的系统架构

    优点:能够帮助咱们快速的开发项目

    缺点:由于脚手架适用于各种项目的开发,而不是单独的针对某一项目单独研发的,会出现代码冗余

脚手架的使用:

    1、安装脚手架 vue-cli

      全局安装打开cmd运行:cnpm install -g @vue/cli

    2、查看当前版本号:

      vue -V

    3、创建项目:

      根目录下打开cmd运行:vue create objectname项目名称(名称不能有大写)

正文开始

Vue脚手架实现试卷页面功能

将moduleA中的store模块化
在state中放入变量subjectList,通过mutations更新subjectList
在Home.vue中通过mapMutations激活mutations中的getSubjectList,从而更新subjectList

import '@/mock'
export default {
 namespaced: true,
 state: {
 subjectList: []
 },
 mutations: {
 getSubjectList(state, payload) {
  state.subjectList = payload
 }
 }
}

store/index.js
import Vuex from 'vuex'
import Vue from 'vue'
Vue.use(Vuex)
import user from './modules/user'
import moduleA from './modules/moduleA'
let store =new Vuex.Store({
 modules:{
 moduleA
 }
})
export default store

Home.vue

fmtSubjectType,fmtOrder2ABC为过滤器,checkSubjectType为方法,统一放在Vue.mixin中,保存在mixin中的index.js文件中

通过checkSubjectType方法的结果真假控制此div是否存在

<template>
 <div class="main">
 <ul>
 <li class="item" v-for="(item, i) in subjectList" :key="i">
 <h4>{{i+1}}.[{{item.type|fmtSubjectType}}] {{item.title}}</h4>
 <div style="color:#888;font-size:14px">
  {{item.author}}{{item.createDate}}
 </div>
 <fieldset style="padding:0 10px;" v-if="checkSubjectType(item.type)">
  <legend >选项</legend>
  <div v-for="(choice, j) in item.choice" :key="j">
  {{j|fmtOrder2ABC}} {{choice.answer}}
  </div>
 </fieldset>
 <div v-if="checkSubjectType(item.type)">答案:{{item.answer}}</div>
 <div >解析:{{item.desc}}</div>
 </li>
 </ul>
 </div>
</template>
<script>
import '@/mock'
import {createNamespacedHelpers} from 'vuex'
let {mapState,mapMutations,mapActions}= createNamespacedHelpers('moduleA')
export default {
 async created() {
 let {subjectList} = await this.$get('/subjectList')
 this.getSubjectList(subjectList) 
 },
 computed: {
 ...mapState(['subjectList'])
 },
 methods: {
 ...mapMutations(['getSubjectList']),
 }
};
</script>
<style scoped lang='scss'>
.main{
 border: 1px solid red;
 .item{
 padding: 20px 10px;
 border-bottom: 1px solid #ccc;
 }
}
</style>

mixin/index.js
通过切 换BASE_URL 来切换接口,axios中的url是通过 BASE_URL 拼接的

import axios from 'axios'
import Vue from 'vue'
import { BASE_URL } from '@/config'
import {SUBJECT_TYPE} from '@/config/enum'
Vue.mixin({
 methods: {
 async $get(url,params){
  let {data} = await axios.get(BASE_URL+url,{params})
  return data
 },
 checkSubjectType(type){
  return type===SUBJECT_TYPE.DANXUAN||type===SUBJECT_TYPE.DUOXUAN
 }
 },
 filters:{
 fmtSubjectType(val){
  return ['单选题', '多选题', '判断题', '简答题'][val]
 },
 fmtOrder2ABC(val) {
  return 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'[val]
 }
 },
 data() {
 return {
  SUBJECT_TYPE
 }
 },
})

config/index.js

通过MODE的改变,更换接口

import {MODE_TYPE} from './enum'
const BASE_URL_BEF=''
const BASE_URL_PRO='XXX'
const BASE_URL_DEV='PPPP'
const MODE=MODE_TYPE.BEF
export const BASE_URL = [BASE_URL_BEF,BASE_URL_PRO,BASE_URL_DEV][MODE]

config/enum.js

鉴于魔法数字的缘故,通过如下,使代码更清晰

//枚举
export const MODE_TYPE={
 BEF:0,
 PRO:1,
 DEV:2
}
export const SUBJECT_TYPE={
 DANXUAN:0,
 DUOXUAN:1,
 PANDUAN:2,
 JIANDA:3
}

mock/index.js

通过mock伪造数据

import Mock from 'mockjs'
Mock.mock('/subjectList',{
 "subjectList|10":[
 {
  "id|+1": 1,
  "title": "@cword(5,10)",
  "type": "@integer(0,3)",
  author:"@cname",
  createDate:'@datetime',
  "choice": [
  {
   "id": 11,
   "choice": "A",
   "answer": 0
  },
  {
   "id": 12,
   "choice": "B",
   "answer": 1
  },
  {
   "id": 13,
   "choice": "C",
   "answer": 2
  },
  {
   "id": 14,
   "choice": "D",
   "answer": 3
  }
  ],
  "answer": "C",
  desc:'@cword(8,25)'
 }
 ]
})

总结