//template
<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) => {
              cbStatusCharged(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 slot="footer" class="footer">
        <!-- 未完成的任务个数 -->
        <span>{{ unDoneLength }}条剩余</span>
        <!-- 操作按钮 -->
        <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>
        <!-- 把已经完成的任务清空 -->
        <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 {};
  },
  created() {
    this.$store.dispatch("getList");
    console.log(this.$store.state.list);
    // console.log(this.list);
  },
  computed: {
    ...mapState(["list", "inputValue", "viewKey"]),
    ...mapGetters(["unDoneLength", "infolist"]),
  },
  methods: {
    handleInputChange(e) {
      this.$store.commit("SETINPUTVALUE", e.target.value);
    },
    addItemToList() {
      if (this.inputValue.trim().length <= 0) {
        return this.$message.warning("文本框内容不能为空");
      }
      this.$store.commit("ADDITEM");
    },
    removeItemById(id) {
      console.log(id);
      this.$store.commit("REMOVEITEMBYID", id);
    },
    cbStatusCharged(e, id) {
      console.log(e);
      const param = {
        id: id,
        status: e.target.checked,
      };
      this.$store.commit("CHANGESTATUS", param);
    },
    clean() {
      this.$store.commit("CLEANDONE");
    },
    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>

//store
import Vue from 'vue'
import Vuex from 'vuex'
import axios from 'axios'
Vue.use(Vuex)
export default new Vuex.Store({
    state: {
        list: [],
        inputValue: '',
        newxtId: 5,
        viewKey: 'all'
    },
    mutations: {
        INITLIST(state, list) {
            state.list = list
        },
        SETINPUTVALUE(state, val) {
            state.inputValue = val
        },
        ADDITEM(state) {
            const obj = {
                id: state.newxtId,
                info: state.inputValue.trim(),
                done: false
            }
            state.list.push(obj)
            state.newxtId++
            state.inputValue = ''
        },
        REMOVEITEMBYID(state, id) {
            const i = state.list.findIndex(x => x.id === id)
            if (i !== -1) {
                state.list.splice(i, 1)
            }
        },
        CHANGESTATUS(state, param) {
            const i = state.list.findIndex(x => x.id === param.id)
            if (i !== 1) {
                state.list[i].done = param.status
            }
        },
        CLEANDONE(state) {
            state.list = state.list.filter(x => x.done === false)
        },
        CHANGEVIEWKEY(state, key) {
            state.viewKey = key
        }
    },
    actions: {
        getList(context) {
            axios.get('../static/list.json').then(({ data }) => {
                context.commit('INITLIST', data)
            })

        }
    },
    getters: {
        unDoneLength(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)
            }
            if (state.viewKey === 'done') {
                return state.list.filter(x => x.done)
            }
            return state.list
        }
    }
})

最后附上gitee克隆地址

https://gitee.com/ouyangSingle/vuex-demo