exportfunctiongetInputKey(info){ let self=this; let obj=JSON.parse(info); let qiniuKey; let imaName; let imgSuffix;if(obj){ qiniuKey=obj.key; imaName=obj.fileName; imgSuffix= imaName.substring(imaName.lastIndexOf('.') + 1); }this.props.callback(qiniuKey,imgSuffix); } 批量新增: ...
export const { post, get, put } = requestFun; export default requestFun; 如何调用 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 importrequestFun from'../utils/fetchUtil'; importqs from'qs'; const { stringify } = qs;const {post,get} = requestFun; //get方式 exportasyncfunctionfetchDa...
比如下面这段伪代码: // src/hooks/useChangePassword.js// 修改密码动作exportfunctionuseChangePassword(){// 当前用户信息的共享状态const[userInfo, setUserInfo] =useRecoilState(userAtom);// 修改密码constchangePassword=async(oldPassword, newPassword) => {// 1. 调用修改密码接口constresult =awaitpost(...
而b则是当前组件的状态 是组件私有的 不会共享
// components/CompA.index.tsx import { counterStore } from '~/store' import { useSnapshot } from 'valtio'export function CompA() { const { count, increase } = useSnapshot(counterStore) return ( CompA count: {count} + ) } 这里使用了 useSnapshot api,是为了保持 count state 的响...
export const CLOSEPAGELOADING = 'ClosePageLoading' 1. 2. 3. reducers 通过不同事件来触发值的改变 // reducers/index.js import { OPENPAGELOADING, CLOSEPAGELOADING } from '../actions' const initState = { pageLoadingVal: false } const AppReducer = (state=initState, action) => { ...
(uninitializedFiber);returnroot;}//对于HostRoot或者ClassComponent会使用initializeUpdateQueue创建updateQueue,然后将updateQueue挂载到fiber节点上exportfunctioninitializeUpdateQueue<State>(fiber:Fiber):void{constqueue:UpdateQueue<State>={baseState:fiber.memoizedState,//初始state,后面会基于这个state,根据Update计算...
import { useState } from 'react' export default function App() { // 声明一个叫 count 的 state 变量 useState(0) 传参 0 为设置的初始值 const [count, setCount] = useState(0);//[] 数组解构 取到数组中对应位置的值 赋给相应变量 const [isHot, setIsHot] = useState(true); ...
export const useToggle = (initValue) => { const [show, setShow] = useState(initValue); function toggleShow() { setShow(!show); } return [show, toggleShow]; }; 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. index.jsx
export default function Methods() { const btn = (e)=>{ console.log('点你了...'); //自带event 事件对象 console.log(e); //阻止事件冒泡e.stopPropagation() } return ( 点我呀 ) } 绑定事件并传递参数 如果直接绑定事件,react 会误...