AI代码解释 import{atom,watch,getSnap}from'helux';watch(()=>{console.log(`change from${getSnap(numAtom).val}to${numAtom.val}`);},()=>[atom],);watch(()=>{console.log(`change from${getSnap(numAtom).val.b.b1}to${numAtom.val.b.b1}`,);},()=>[objAtom.val.b.b1],); 派生...
{ payload: { user } }) {let { userList = [] } = state;const temp = userList.concat();temp.push({ id: userList.length + 1, ...user });return {...state,userList: temp,};},// 删除用户delete(state, { payload: id }) {let { userList = []...
getDerivedStateFromProps():用于替代 componentWillReceiveProps 和 componentWillUpdate,允许根据 props 的变化来更新组件的 state。 getSnapshotBeforeUpdate():用于替代 componentWillUpdate,允许在更新前获取 DOM 的快照信息。 React 16.8(引入了 Hooks) 引入了useEffect这一 Hook,用于替代类组件中的生命周期方法,以处...
getLocalStorage:读取本地存储的状态 setLocalStorage:将状态存储到本地 removeLocalStorage:从本地存储中删除状态 使用示例: import { useEffect, useState } from "react"; import { useLocalStorage } from "./utils/hooks"; let initialForm = { name: "", website: "", contact: { cell: "", email: ...
{ Modal, Tabs, Timeline } from 'antd'; import { store } from '../../store'; import { useColumns } from './index.hooks'; import styles from './index.less'; const { TabPane } = Tabs; const Logistics = () => { const { modalVisible, expressList } = store.useState(); const...
useParams 代码语言:javascript 代码运行次数:0 运行 AI代码解释 import { useParams, useEffect } from 'react-router'; const Component = () => { const params = useParams(); const getUserInfo = id => { // request api // some event }; useEffect(() => { // parms 的 uid 发生变化就会...
payload: '转递参数' } var store = createStore ( myReducers ) store.dispatch (action)//调用action <Provider store = { store }> 包裹项目 </Provider> * 组件内使用redux import { connect } from 'react-redux' import { xxx } from '/action/xxx' ...
flagCreatedTime: params.flagCreatedTime }); return res.data } catch (error) { return thunkAPI.rejectWithValue({errorMsg: error.message}); } }); 分页方法的回调: [getMessages.fulfilled]:(state, action) => { if (action.payload.data) { ...
handleAudioData(client: Socket, payload: ArrayBuffer) { try { const audioFileName = client.handshake.query.audioFileName as string; const buffer = Buffer.from(payload); const singleReadable = new Readable(); // eslint-disable-next-line @typescript-eslint/no-empty-function ...
import { Button } from 'antd' import {Map} from 'immutable' var obj = { name: 'immutable' } var oldObj = Map(obj) console.log(oldObj) // 更改值 var newObj = oldObj.set('name', 'react') // 1.获取值:get获取 console.log(oldObj.get('name'), newObj.get('name')) ...