Vuex를 사용하여 메모 작성 애플리케이션을 구현하는 방법

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

Vue.config.productionTip = false

new Vue({
 el: '#app',
 store,        
 components: { App },
 template: &#39;<App/>&#39;
})

import Vue from 'vue'
import Vuex from 'vuex'
import getters from './getters'
import mutations from './mutations'
import actions from './actions'

Vue.use(Vuex)    

const defaultNote = {
  id: +new Date(),    
  title: '新建笔记' + new Date().getMilliseconds(),    // 加时间是为了做一下区分
  content: '笔记内容',
  fav: false
}

// 可以理解为一个状态的仓库  
const state = {
  notes: [defaultNote],      // 以数组方式存放所有的笔记
  activeNote: defaultNote,    // 用来记录当前笔记  
  show: 'all'           // 用于切换 全部 / 已收藏 两种不同列表的标识
}

export default new Vuex.Store({
  state,
  getters,
  mutations,
  actions
})

strAdd(){
  return this.str + "abc"
}

<template>
  <p id="tool">
    <button class="add" @click="add_note">新增</button>
    <button class="fav" @click="fav_note">收藏</button>
    <button class="del" @click="del_note">删除</button>
  </p>
</template>
<script type="text/javascript">
  import { mapState, mapGetter, mapActions } from &#39;vuex&#39;
  export default {
    name: &#39;tool&#39;,
    methods:{      
      ...mapActions([&#39;add_note&#39;,&#39;del_note&#39;,&#39;fav_note&#39;])
    }
  }
</script>
<style type="text/css" scoped>
  #tool {
    width: 200px;
    height: 600px;
    border: 2px solid #ccc;
    float: left;
  }
  
  button {
    width: 100%;
    height: calc(100% / 3);    
    font-size: 60px;
  }
</style>

...map({
 本组件的属性 : Vuex 中 actions 中的属性
})

methods:{
 ...mapActions(['abc'])
 // 自定义一个方法，通过触发这个方法调用之前重名的方法并传入参数
 tragger_abc(参数){
  this.abc(参数)
 }
}

<template>
  <p id="list">
    <p class="switch">
      <button class="all" @click=&#39;get_switch_note("all")&#39;>全部</button><button class="fav" @click=&#39;get_switch_note("fav")&#39;>已收藏</button>
    </p>
    <p class="search">
      <input type="text" placeholder="在这里搜索" v-model="search" />
    </p>
    <p class="noteList">
      <p class="note" v-for="note in search_filteredNote" :class="{favColor:note.fav===true,active:note.id===activeNote.id}" @click=&#39;get_select_note(note)&#39;>
        <p class="title">
          <p>{{note.title}}</p>
        </p>
        <p class="content">
          <p>{{note.content}}</p>
        </p>
      </p>
    </p>
  </p>
</template>
<script type="text/javascript">
  import { mapState, mapGetters, mapActions } from &#39;vuex&#39;
  export default {
    name: &#39;list&#39;,
    data: function() {
      return {
        search: "" 
      }
    },
    computed: {
      ...mapState([&#39;notes&#39;, &#39;activeNote&#39;]),
      ...mapGetters([&#39;filteredNote&#39;]),
      // 二次过滤：在当前列表(全部 或 已收藏)中进行筛选,返回值被用在组件的 v-for 中 
      search_filteredNote() {
        if(this.search.length > 0) {    // 如果输入框有值,返回二次过滤的结果并加载
          return this.filteredNote.filter(note => {
            if(note.title.indexOf(this.search) > 0) {
              return note
            }
          })
        } else {      // 输入框没值,不过滤,直接拿来加载
          return this.filteredNote
        }
      }
    },
    methods: {
      ...mapActions([&#39;select_note&#39;, &#39;switch_note&#39;]), 
      get_select_note(note) {
        this.select_note(note)
      },
      get_switch_note(type) {
        this.switch_note(type)
      }
    }
  }
</script>
<style type="text/css" scoped="scoped">
  #list {
    width: 300px;
    height: 600px;
    border: 2px solid #ccc;
    float: left;
    margin-left: 10px;
    display: flex;
    flex-direction: column;
  }
  
  p {
    margin: 0;
  }
  
  .switch {}
  
  .switch button {
    height: 60px;
    width: 50%;
    font-size: 40px;
  }
  
  .search {
    border: 1px solid #CCCCCC
  }
  
  input {
    width: 100%;
    box-sizing: border-box;
    height: 50px;
    line-height: 50px;
    padding: 10px;
    outline: none;
    font-size: 20px;
    border: none;
  }
  
  .noteList {
    flex-grow: 1;
    overflow: auto;
  }
  
  .note {
    border: 1px solid #CCCCCC;
  }
  
  .favColor {
    background: pink;
  }
  
  .active {
    background: lightblue
  }
</style>

<template>
  <p id="edit">
    <p class="title">
      <input type="text" placeholder="在这里输入标题" v-model="activeNote.title"/>
    </p>
    <p class="content">
      <textarea name="" placeholder="在这里吐槽" v-model="activeNote.content"></textarea>
    </p>
  </p>
</template>
<script type="text/javascript">
  import { mapState, mapGetter, mapActions } from &#39;vuex&#39;
  export default {
    name: &#39;edit&#39;,
    computed:{
      ...mapState([&#39;activeNote&#39;])   // 当本组件中 computed 中的属性名与 Vuex 中的 state 属性名相同时,就可以在 mapState() 中简写
    }
  }
</script>
<style type="text/css" scoped="scoped">
  #edit {
    width: 300px;
    height: 600px;
    border: 2px solid #ccc;
    float: left;
    margin-left: 10px;
    display: flex;
    flex-direction: column;
  }
  
  .title {
    border: 1px solid #CCCCCC;
  }
  
  input {
    width: 100%;
    box-sizing: border-box;
    height: 50px;
    line-height: 50px;
    padding: 10px;
    outline: none;
    font-size: 20px;
    border: none;
  }
  
  .content {
    flex-grow: 1;
    background: orange;
    display: flex;
    flex-direction: column;
  }
  
  textarea {
    width: 100%;
    box-sizing: border-box;
    flex-grow: 1;
    resize: none;
    padding: 10px;
    font-size: 20px;
    outline: none;
    font-family: inherit;
  }
</style>

export default {
  add_note({commit}) {
    commit('ADD_NOTE')
  },
  select_note({commit}, note) {
    commit("SELECT_NOTE", note)
  },
  del_note({commit}) {
    commit("DEL_NOTE")
  },
  fav_note({commit}) {
    commit("FAV_NOTE")
  },
  switch_note({commit}, type) {
    commit("SWITCH_NOTE", type)
  }
}

# tool.vue
...mapActions(['add_note','del_note','fav_note'])

export default {
  filteredNote: (state) => {
    if(state.show === 'all') {
      return state.notes
    } else {
      return state.notes.filter((note) => {
        if(note.fav === true) {
          return note
        }
      })
    }
  }
}

import { SWITCH_NOTE, ADD_NOTE, SELECT_NOTE, DEL_NOTE, FAV_NOTE } from './mutation-types'

export default {
  [ADD_NOTE](state, note = {
    id: +new Date(),
    title: '新建笔记' + new Date().getMilliseconds(),
    content: '笔记内容',
    fav: false
  }) {
    state.notes.push(note)
    state.activeNote = note
  },
  [SELECT_NOTE](state, note) {
    state.activeNote = note
  },
  [DEL_NOTE](state) {
    for(let i = 0; i < state.notes.length; i++) {
      if(state.notes[i].id === state.activeNote.id) {
        state.notes.splice(i, 1)
        state.activeNote = state.notes[i] || state.notes[i - 1] || {}
        return
      }
    }
  },
  [FAV_NOTE](state) {
    state.activeNote.fav = !state.activeNote.fav
  },
  [SWITCH_NOTE](state, type) {
    state.show = type
  }
}

export const ADD_NOTE = "ADD_NOTE"
export const SELECT_NOTE = "SELECT_NOTE"
export const DEL_NOTE = "DEL_NOTE"
export const FAV_NOTE = "FAV_NOTE"
export const SWITCH_NOTE = "SWITCH_NOTE"