【Vuex实战】VueX+AntD实现To do List效果

1. 需要安装的包

1.1 axios

npm install axios

1.2 ant-design-vue

npm install [email protected]

2.代码结构

2. list.json

[
  {
    "id": 0,
    "info": "Racing car sprays burning fuel into crowd.",
    "done": true
  },
  { "id": 1, "info": " Japanese princess to wed commoner.", "done": false },
  {
    "id": 2,
    "info": "Australian walks 100km after outback crash.",
    "done": true
  },
  { "id": 3, "info": "Man charged over missing wedding girl.", "done": false },
  { "id": 4, "info": "Los Angeles battles huge wildfires.", "done": false }
]

3. main.js

import Vue from 'vue'
import App from './App.vue'
import store from './store'

import Antd from 'ant-design-vue'
import 'ant-design-vue/dist/antd.css'

Vue.use(Antd)

Vue.config.productionTip = false

new Vue({
  store,
  render: h => h(App)
}).$mount('#app')

4. store/index.js

import Vue from 'vue'
import Vuex from 'vuex'
import axios from 'axios'

Vue.use(Vuex)

export default new Vuex.Store({
  state: {
    // 所有的任务列表
    list: [],
    // 文本框的内容
    inputValue: 'aaa',
    // 下一项的id
    nextId: 5,
    viewKey: 'all',
  },
  getters: {
  },
  mutations: {
    initList(state, list) {
      state.list = list
    },
    // 为 store 中的 inputValue 赋值
    setInputValue(state, val) {
      state.inputValue = val
    },
    // 添加 item
    addItem(state) {
      const obj = {
        id: state.nextId,
        info: state.inputValue,
        done: false,
      }
      state.list.push(obj)
      state.nextId++
      state.inputValue = ''
    },
    // 删除 Item
    removeItem(state, id) {
      // 1. 根据 id 查找对应项的索引
      const i = state.list.findIndex(x => x.id === id)
      // 2. 根据索引，删除对应的元素
      if(i !== -1) {
        state.list.splice(i, 1)
      }
    },
    // 修改列表项的选中状态
    changeStatus(state, params) {
      const i = state.list.findIndex(x => x.id === params.id)
      if(i !== -1) {
        state.list[i].done = params.status
      }
    },
    // 清除已完成的列表
    cleanDone(state) {
      state.list = state.list.filter(x => x.done === false)
    },
    changeViewKey(state, key) {
      state.viewKey = key
    }
  },
  actions: {
    getList(context) {
      axios.get('/list.json').then(({data})=>{
        // console.log(data);
        context.commit('initList', data)
      })
    }
  },
  getters: {
    // 获取剩余未完成的列表条数
    unDoneLen(state) {
      return state.list.filter(x => x.done === false).length
    },
    infoList(state) {
      if(state.viewKey === 'all') {
        return state.list
      }
      if (state.viewKey === 'undone') {
        return state.list.filter(x => x.done === false)
      }
      if(state.viewKey === 'done'){
        return state.list.filter(x => x.done === true)
      }
      return state.list
    }
  },
  modules: {
  }
})

5. App.vue根组件代码

<template>
  <div id="app">
    <a-input placeholder="请输入任务" class="my_ipt" :value="inputValue" @change="handleInputChange" />
    <a-button type="primary" @click="addItemToList">添加事项</a-button>

    <a-list bordered :dataSource="infoList" class="dt_list">
      <a-list-item slot="renderItem" slot-scope="item">
        <!-- 复选框 -->
        <a-checkbox :checked="item.done" @change="(e) => {cbStatusChanged(e, item.id)}">{{ item.info }}</a-checkbox>
        <!-- 删除链接 -->
        <a slot="actions" @click="removeItemById(item.id)">删除</a>
      </a-list-item>

      <!-- footer区域 -->
      <div class="footer" slot="footer">
        <span>{{ unDoneLen }}条未完成</span>
        <a-button-group>
          <a-button :type="viewKey === 'all' ? 'primary' : 'default'" @click="changeList('all')">全部</a-button>
          <a-button :type="viewKey === 'undone' ? 'primary' : 'default'" @click="changeList('undone')">未完成</a-button>
          <a-button :type="viewKey === 'done' ? 'primary' : 'default'" @click="changeList('done')">已完成</a-button>
        </a-button-group>
        <a @click="clean">清除已完成</a>
      </div>
    </a-list>
  </div>
</template>
<script>
import { mapState, mapGetters } from 'vuex';

export default {
  name: "app",
  data() {
    return {
      // list: [],
    };
  },
  created() {
    this.$store.dispatch('getList')
  },
  computed: {
    ...mapState(['list', 'inputValue', 'viewKey']),
    ...mapGetters(['unDoneLen', 'infoList'])
  },
  methods: {
    // 监听文本框内容变化
    handleInputChange(e) {
      // console.log(e.target.value)
      this.$store.commit('setInputValue', e.target.value)
    },
    // 向列表中添加 item 项
    addItemToList() {
      // 判断输入是否为空
      if(this.inputValue.trim().length <= 0) {
        return this.$message.warning('文本框内容不能为空！')
      }
      this.$store.commit('addItem')
    },
    // 根据 id 删除对应的 任务事项
    removeItemById(id) {
      this.$store.commit('removeItem', id)
    },
    // 监听 复选框的状态改变
    cbStatusChanged(e, id) {
      // console.log(e.target.checked);
      // console.log(id);
      const params = {
        id: id,
        status: e.target.checked
      }
      this.$store.commit('changeStatus', params)
    },
    // 清除已完成的列表
    clean() {
      this.$store.commit('cleanDone')
    },
    // 修改列表展示的列表数据
    changeList(key) {
      // console.log(key);
      this.$store.commit('changeViewKey', key)
    }
  }
};
</script>
<style scoped>
#app {
  padding: 10px;
}
.my_ipt {
  width: 500px;
  margin-right: 10px;
}
.dt_list {
  width: 500px;
  margin-top: 10px;
}
.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
</style>

6. 效果

• 全部
  

• 未完成
  

• 已完成
  

• 添加aaa、bbb
  

• 删除bbb