observer是mobx-react-lite中的主要工具,它是一个高阶组件(HOC),用于将组件包裹起来并使其响应 MobX 的状态变化。 import { observer } from 'mobx-react-lite'; import React from 'react'; // 一个简单的 MobX store const store =observable({ count: 0, increment() { this.count += 1; } }); ...
// components/TodoList.tsx import { observer } from 'mobx-react-lite'; import { useEffect } from 'react'; import { useStore } from '../stores'; const TodoList = observer(() => { const { todoStore } = useStore(); useEffect(() => { todoStore.fetchTodos(); }, []); if (to...
The observer of mobx-react-lite seems to not trigger the wrapped component to re-renders after upgrading from mobx-react-lite@3.4.3 to mobx-react-lite@4.0.2. Intended outcome: When an observable value changes in the store, the observer component should re-render with the new value. Actual...
exportfunctionuseObserver<T>(fn:()=>T,baseComponentName:string="observed",options:IUseObserverOptions=EMPTY_OBJECT):T{if(isUsingStaticRendering()){returnfn()}// 定义 forceUpdate 方法,该方法用于更新 function component,默认方法是 useForceUpdateconstwantedForceUpdateHook=options.useForceUpdate||useForceUpda...
在使用时，我们从官网示例入手，逐步分析 mobx 和 hook 的结合方式。首先，通过 observer 高阶组件和 useLocalStore，我们能观察到 mobx-react 对 function component 的支持。observer 主要通过 useObserver 方法进行封装，并利用 react.memo 进行优化，以避免不必要的渲染。useObserver 方法实现了四个关键...
import { observer } from 'mobx-react-lite'; import CounterStore from './store/counter'; function App() { const counter = CounterStore; return ( <> Count: {counter.count} Doubled Count: {counter.doubledCount} counter.increment()}
Intended outcome: Expected to be able to render a component that is exported as observer(Component, {forwardRef: true}) Actual outcome: Get error: How to reproduce the issue: Make a component that uses React.forwardRef, then export that ...
在React Native的组件中,导入mobx-react-lite和mobx库,并使用observer函数将组件包裹起来,以便在组件中使用mobx的状态和函数。 代码语言:txt 复制 import React from 'react'; import { observer } from 'mobx-react-lite'; import store from './mobxStore'; const MyComponent = observer(() =>...
The observer converts a component into a reactive component, which tracks which observables are used automatically and re-renders the component when one of these values changes. Can only be used for function components. For class component support see the mobx-react package....
安装配置 yarn add mobx mobx-react yarn add babel-plugin-transform-decorators-legacy // webpack....