使用VueCli3+TypeScript+Vuex一步步构建todoList的方法

╭─~/otherEWokspace
╰─➤ vue create ts-vuex-demo


Vue CLI v3.6.3
┌───────────────────────────┐
│ Update available: 3.9.3 │
└───────────────────────────┘
? Please pick a preset: Manually select features

? Check the features needed for your project: Babel, TS, Router, Vuex, CSS P
re-processors, Linter, Unit

? Use class-style component syntax? Yes

? Use Babel alongside TypeScript for auto-detected polyfills? Yes

? Use history mode for router? (Requires proper server setup for index fallb
ack in production) Yes

? Pick a CSS pre-processor (PostCSS, Autoprefixer and CSS Modules are suppor
ted by default): Sass/SCSS (with node-sass)

? Pick a linter / formatter config: TSLint

? Pick additional lint features: (Press <space> to select, <a> to toggle all
, <i> to invert selection)Lint on save

? Pick a unit testing solution: Jest

? Where do you prefer placing config for Babel, PostCSS, ESLint, etc.? In de
dicated config files

? Save this as a preset for future projects? Yes

? Save preset as: ts-vue-demo

╭─~/otherEWokspace/ts-vuex-demo ‹master›
╰─➤ tree -L 2 -I node_modules
.
├── README.md
├── babel.config.js
├── jest.config.js
├── package-lock.json
├── package.json
├── postcss.config.js
├── public
│  ├── favicon.ico
│  └── index.html
├── src
│  ├── App.vue
│  ├── assets
│  ├── components
│  ├── main.ts
│  ├── router.ts
│  ├── shims-tsx.d.ts
│  ├── shims-vue.d.ts
│  ├── store.ts
│  └── views
├── tests
│  └── unit
├── tsconfig.json
└── tslint.json

{
 "compilerOptions": {
  "target": "esnext",
  "module": "esnext",
  "strict": true,
  "jsx": "preserve", // 开启对 jsx 的支持
  "importHelpers": true,
  "moduleResolution": "node",
  "experimentalDecorators": true,
  "esModuleInterop": true,
  "allowSyntheticDefaultImports": true,
  "sourceMap": true,
  "baseUrl": ".",
  "types": [
   "webpack-env",
   "jest"
  ],
  "paths": {
   "@/*": [
    "src/*"
   ]
  },
  "lib": [
   "esnext",
   "dom",
   "dom.iterable",
   "scripthost"
  ]
 },
 "include": [
  "src/**/*.ts",
  "src/**/*.tsx",
  "src/**/*.vue",
  "tests/**/*.ts",
  "tests/**/*.tsx"
 ],
 "exclude": [
  "node_modules"
 ]
}

// index.ts
export const Greeter = (name: string) => `Hello ${name}`;

// index.js
"use strict";

Object.defineProperty(exports, "__esModule", { value: true });

exports.Greeter = function (name) { return "Hello " + name; };

// index.js
export var Greeter = function (name) { return "Hello " + name; };

// index.js
export const Greeter = (name) => `Hello ${name}`;

// index.js
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Greeter = (name) => `Hello ${name}`;

// settings.json
 "editor.codeActionsOnSave": {
  "source.fixAll.tsLint": true
 }

npm i tslint-config-prettier -D

"extends": ["tslint:recommended", "tslint-config-prettier"]

{ "singleQuote": true }

declare module "*.vue" {
 import Vue from "vue";
 export default Vue;
}

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

Vue.config.productionTip = false;

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

npm i element-ui

// main.ts

import ElementUI from 'element-ui';
import 'element-ui/lib/theme-chalk/index.css';

Vue.use(ElementUI);

<template>
 <div class="todo_list">
  <el-card class="box-card">
   <div slot="header">
    <el-row :gutter="18">
     <el-col :span="18">
      <el-input
       v-model="todo"
       placeholder="请输入内容"
      ></el-input>
     </el-col>
     <el-col :span="2">
      <el-button
       type="primary"
       icon="el-icon-circle-plus-outline"
       @click="addItem"
      >add</el-button>
     </el-col>

    </el-row>

   </div>
   <div
    v-for="(item,index) in todoList"
    :key="item"
    class="text item"
    @click="removeItem(index)"
   >{{ item }}</div>
  </el-card>
  <label
   class="text"
   style="margin-top:20px"
  >{{todoLength}} records</label>
 </div>
</template>

<script lang="ts">
import { Component, Prop, Vue, Emit } from 'vue-property-decorator';

@Component
export default class HelloWorld extends Vue {
 public todo: string = '';

 @Prop({ default: [] }) private readonly todoList!: string[];

 get todoLength(): number {
  return this.todoList.length;
 }

 @Emit()
 private addItem(): string | undefined {
  if (this.todo) {
   return this.todo;
  }
 }

 @Emit('removeItem')
 private removeItem(index: number): number {
  return index;
 }
}
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped lang="scss">
.todo_list {
 display: flex;
 justify-content: center;
 flex-direction: column;
 align-items: center;
 .box-card {
  width: 480px;
 }

 .text {
  font-size: 14px;
  text-align: left;
 }

 .item {
  margin-bottom: 18px;
 }
}
</style>

<template>
 <div class="home">
  <todoList
   :todoList="[]"
   @add-item="addTodoList"
   @removeItem="addTodoLisItem"
  />
 </div>
</template>

<script lang="ts">
import { Component, Vue } from 'vue-property-decorator';
import todoList from '@/components/todoList.vue'; // @ is an alias to /src
import { State, Getter, Action } from 'vuex-class';

@Component({
 components: {
  todoList
 }
})
export default class Home extends Vue {
 
 public addTodoList(val: string) {
  console.log(val);
  
 }

 private created() {
  console.log('i add life cycle funciton -- created');
 }

 private addTodoLisItem(index: number) {
  console.log(index);
 }
}
</script>

npm i vuex-class

// index.ts

import Vue from 'vue';
import Vuex from 'vuex';

import todolist from './todoList';

Vue.use(Vuex);

export default new Vuex.Store({
 modules: { todolist }
});

// todoList.ts

import { Commit, Dispatch, GetterTree, ActionTree, MutationTree } from 'vuex';

const ADD_TODOLIST = 'ADD_TODOLIST';
const REMOVE_ITEM = 'REMOVE_ITEM';

export interface RootState {
 version: string;
}

interface Payload {
 [propName: string]: any;
}

interface TodoListType {
 todoList: string[];
}

interface Context {
 commit: Commit;
 dispatch: Dispatch;
}

const dataSource: TodoListType = {
 todoList: []
};

const getters: GetterTree<TodoListType, RootState> = {
 getTodoList(state: TodoListType): string[] {
  return state.todoList;
 }
};

const mutations: MutationTree<TodoListType> = {
 ADD_TODOLIST: (state: TodoListType, item: string) => {
  console.log(item);
  state.todoList.push(item);
 },
 REMOVE_ITEM: (state: TodoListType, removeIndex: number) => {
  state.todoList = state.todoList.filter((item: string, index: number) => {
   return removeIndex !== index;
  });
 }
};

const actions: ActionTree<TodoListType, RootState> = {
 addList: async ({ commit }: Context, item: string) => {
  await Promise.resolve(
   setTimeout(() => {
    commit(ADD_TODOLIST, item);
   }, 100)
  );
 },
 removeItem: async ({ commit }: Context, { index }: Payload) => {
  await Promise.resolve(
   setTimeout(() => {
    commit(REMOVE_ITEM, index);
   }, 100)
  );
 }
};

export default {
 namespaced: true,
 state: dataSource,
 getters,
 mutations,
 actions
};

interface Payload {
 [propName: string]: any;
}

<template>
 <div class="home">
  <todoList
   :todoList="todoList"
   @add-item="addTodoList"
   @removeItem="addTodoLisItem"
  />
 </div>
</template>

<script lang="ts">
import { Component, Vue } from 'vue-property-decorator';
import todoList from '@/components/todoList.vue'; // @ is an alias to /src
import { State, Getter, Action } from 'vuex-class';

@Component({
 components: {
  todoList
 }
})
export default class Home extends Vue {
 @State(state => state.todolist.todoList) private todoList!: string[];

 @Action('todolist/addList') private addList!: (val: string) => void;
 @Action('todolist/removeItem') private removeItem!: (index: number) => void;

 public addTodoList(val: string) {
  console.log(val);
  this.addList(val);
 }

 private created() {
  console.log('i add life cycle funciton -- created');
 }

 private addTodoLisItem(index: number) {
  this.removeItem(index);
 }
}
</script>