1️⃣ 理解React渲染机制 代码语言:jsx AI代码解释 // 典型错误示例:内联对象导致子组件无效更新<ChildComponentstyle={{color:'red'}}/>✅ 改用useMemo缓存 2️⃣ 善用记忆化Hooks 代码语言:jsx AI代码解释 // 正确用法:仅当依赖项变化时重新计算constfilteredList=useMemo(()=>bigData.filter(item=>...
Tip:表格刷新很简单,就是调用父组件的 reload 重新发请求。 全屏 表格全屏也很简单,利用的是浏览器原生支持的功能。 // 全屏操作。使用浏览器自带全屏功能functionhandleFullscreen() {// props.rootRef.current 是表格组件的原始 Element// fullscreenEnabled 属性提供了启用全屏模式的可能性。当它的值是 false 的...
2.2. Reading the current state When your page loads, it might have a non-null state object. This can happen, for example, if the page sets a state object (using pushState() or replaceState())and then the user restarts their browser.When the page reloads, the page will receive an onloa...
this.subscription = DeviceEventEmitter.addListener("hide_loading_page", this.hideLoadingPage); appUpdateModule.updateJs(); } hideLoadingPage = ()=> { SplashScreen.hide(); }; 注意做好容错,例如弱网无网环境下的处理,热更新失败下次保证再次热更新的处理,热更新时间把控,超过时间下次再reload,是否将热...
import React, { useState, useEffect, useCallback } from 'react'; function YourComponent() { const [currentProject, setCurrentProject] = useState(0); const projects = footerData.currentProjects.projects; // Memoize the component rendering this specific element ...
reload:不使用现有的缓存数据 force-cache:现有的缓存数据将用于满足请求,忽略其期限或到期日。如果缓存中没有对应请求的数据,则从原始地址加载。 only-if-cached:现有的缓存数据将用于满足请求,忽略其期限或到期日。如果缓存中没有对应请求的数据,则不尝试从原始地址加载,并且认为请求是失败的。
The page will reload if you make edits. You will also see any lint errors in the console. npm test Launches the test runner in the interactive watch mode. See the section aboutrunning testsfor more information. npm run build Builds the app for production to thebuildfolder. ...
history.block will call your callback for all in-page navigation attempts, but for navigation that reloads the page (e.g. the refresh button or a link that doesn't use history.push) it registers a beforeunload handler to prevent the navigation. In modern browsers you are not able to cust...
// Imagine that "userProfile" is a prop that this component received// which includes the deployment key that the current user should use.codePush.sync({deploymentKey:userProfile.CODEPUSH_KEY}); With that change in place, now it's just a matter of choosing how your app determines the rig...
The page will reload if you make edits. You will also see any lint errors in the console. npm test Launches the test runner in the interactive watch mode. See the section about running tests for more information. npm run build Builds the app for production to the build folder. It correct...