React+Hook+Redux+Ant-d+TypeScript实现TodoList

前言

博主在学习React Hook的时候遇到了一些坑，比如整合 redux 的时候，网上的方案大多不可用，要么就是过时了，踩了很多坑，最后终于实现了。特写了一篇博客记录下来。避免再次踩坑。

项目搭建

首先创建一个React+TypeScript 的项目，根据 官方文档 的说明，目前为止最新的创建方法为：

npx create-react-app my-app --template typescript

然后删除不必要的文件及index.html中不必要的代码（非强制，可删可不删），然后创建一些文件，最终使项目目录结构如下:

安装对应依赖

• 安装Redux npm install redux --save
• 安装Redux-react-hook npm install redux-react-hook --save
• 安装Antd npm install antd --save

编写Redux代码

• actionTypes.ts

export const CHANGE_INPUT_VALUE = 'change_input_value';
export const ADD_TODO_ITEM = 'add_todo_item';
export const DELETE_TODO_ITEM = 'delete_todo_item';

• actionCreators.ts

import {
     CHANGE_INPUT_VALUE, ADD_TODO_ITEM, DELETE_TODO_ITEM} from './actionTypes';

export const getInputChangeAction = (value: string) => {
     
  return {
     
    type: CHANGE_INPUT_VALUE,
    value
  }
}
export const getAddItemAction = () => {
     
  return {
     
    type: ADD_TODO_ITEM
  }
}
export const getDeleteItemAction = (index: number) => {
     
  return {
     
    type: DELETE_TODO_ITEM,
    index
  }
}

• reducer.ts

import {
     CHANGE_INPUT_VALUE, DELETE_TODO_ITEM, ADD_TODO_ITEM} from './actionTypes';

interface MyState {
     
  inputValue: string,
  list: string[]
}

const defaultState: MyState = {
     
  inputValue: '',
  list: []
}

export default (state: MyState = defaultState, action: any) => {
     
  const newState: MyState = JSON.parse(JSON.stringify(state));
  if (action.type === CHANGE_INPUT_VALUE) {
     
    newState.inputValue = action.value;
    return newState;
  }
  if (action.type === ADD_TODO_ITEM) {
     
    newState.list.push(newState.inputValue);
    newState.inputValue = '';
    return newState;
  }
  if (action.type === DELETE_TODO_ITEM) {
     
    newState.list.splice(action.index, 1);
    return newState
  }
  return state;
}

• index.ts

import {
     createStore} from 'redux';
import reducer from "./reducer";

const store = createStore(reducer);

export default store;

• App.css

.parent{
     
    margin: 20px;
}
#itemInput{
     

    width: 300px;
    margin-right: 20px;
}
#list{
     
    margin-top: 15px;
    width: 300px;
}

• App.tsx

import React, {
     useEffect, Fragment} from 'react';
import {
     List, Input, Button} from 'antd';
import './App.css';
import {
     useMappedState, useDispatch} from "redux-react-hook";

import {
     
  getInputChangeAction,
  getAddItemAction,
  getDeleteItemAction
} from './store/actionCreators';

const App = () => {
     

  const inputValue = useMappedState<string>(state => state.inputValue);
  const list = useMappedState(state => state.list);
  const dispatch = useDispatch();
  useEffect(() => {
     
    console.log('success');
  })

  const handleButtonClick = () => {
     
    const action = getAddItemAction();
    dispatch(action);
  }

  const handleItemDelete = (index: number) => {
     
    const action = getDeleteItemAction(index);
    dispatch(action);
  }

  const handleInputValueChange = (e: any) => {
     
    const action = getInputChangeAction(e.target.value);
    dispatch(action);
  }

  return (
    <Fragment>
      <div className='parent'>
        <div>
          <Input id='itemInput' value={
     inputValue} placeholder='请输入内容'
                 onChange={
     (e) => {
     
                   handleInputValueChange(e)
                 }}
          />
          <Button type='primary' onClick={
     handleButtonClick}>提交</Button>
        </div>
        <List id='list' size="small" bordered dataSource={
     list}
              renderItem={
     (item: string, index: number) => {
     
                return (
                  <List.Item onClick={
     () => handleItemDelete(index)} title='点击删除'>
                    {
     item}
                  </List.Item>
                )
              }}
        />
      </div>
    </Fragment>
  )
}

export default App;

• index.tsx

import React from 'react';
import ReactDOM from 'react-dom';
import 'antd/dist/antd.css';
import {
     StoreContext} from "redux-react-hook";
import store from "./store";
import App from "./App";

ReactDOM.render(
  <StoreContext.Provider value={
     store}>
    <App/>
  </StoreContext.Provider>,
  document.getElementById('root')
);

启动

npm start

效果如下

这就是React+Hook+Redux+Ant-d+TypeScript实现的TodoList功能

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