⚛️ React Errors

48 error notes

Warning: Button: Support for defaultProps will be removed from function components in a future major release. Use JavaScript default parameters instead.

reactjavascripttypescriptphát-triển-web

reactintermediate

Ngừng gây nhiễu: Cách khắc phục lỗi 'componentWillMount has been renamed' trong React

Warning: componentWillMount has been renamed, and is not recommended for use. See https://reactjs.org/link/unsafe-component-lifecycles for details.

reactvòng đờicomponentWillMountUNSAFE_

reactintermediate

Sửa lỗi 'Failed to execute removeChild on Node' trong React

NotFoundError: Failed to execute 'removeChild' on 'Node': The node to be removed is not a child of this node.

reactjavascriptdomdebugging

reactintermediate

Sửa lỗi 'This Suspense boundary received an update before it finished hydrating' trong React 18

Error: This Suspense boundary received an update before it finished hydrating. This caused the boundary to switch to client rendering.

react18suspensehydrationconcurrent-mode

reactcơ bản

Cách khắc phục lỗi 'A React component suspended while rendering' trong React

Error: A React component suspended while rendering, but no fallback UI was specified. Add a <Suspense fallback=...> component higher in the tree to provide a loading indicator or placeholder to display.

reactsuspensejavascript-errorsperformance

reactbeginner

Sửa lỗi "It only works in a Client Component" trong Next.js App Router

Error: You're importing a component that needs useState. It only works in a Client Component but none of its parents are marked with "use client".

nextjsreactapp-router

reactintermediate

Khắc phục lỗi Minified React #185: Ngăn chặn vòng lặp vô hạn trong Production

Error: Minified React error #185; visit https://reactjs.org/docs/error-decoder.html?invariant=185 for the full message.

reactproductiongỡ lỗijavascript

reactbeginner

Cách sửa lỗi 'Adjacent JSX elements must be wrapped in an enclosing tag' trong React

Adjacent JSX elements must be wrapped in an enclosing tag. Did you want a JSX fragment <>...</>?

reactjsxfragmentlỗi-cú-pháp

reactbeginner

Sửa lỗi 'Target Container is Not a DOM Element' khi cài đặt React App

Error: Target container is not a DOM element.

reactdomcài đặtindex.html

reactbeginner

Sửa lỗi 'Functions are not valid as a React child' trong React

Uncaught Error: Functions are not valid as a React child. This may happen if you return a Component instead of <Component /> from render.

reactjsxjavascriptgỡ lỗi

reactbeginner

Sửa lỗi cảnh báo 'Style Prop Expects a Mapping' trong React

Warning: The `style` prop expects a mapping from style properties to values, not a string. For example, style={{color: 'red'}} when using JSX.

reactcssjavascriptjsx

reactbeginner

Khắc phục lỗi 'ReferenceError: process is not defined' trong React + Vite

Uncaught ReferenceError: process is not defined

reactvitejavascriptfrontend

reactintermediate

Cách khắc phục lỗi 'Could not find a declaration file for module' trong TypeScript

Could not find a declaration file for module 'module-name'. '/path/to/module.js' implicitly has an 'any' type.

reacttypescriptdeclaration-filenpm

reactintermediate

Khắc phục lỗi 'React.Children.only' trong các Wrapper Component của bạn

React.Children.only expected to receive a single React element child.

reactjavascriptlap-trinh-frontenddebugging

reactintermediate

Sửa lỗi 'Maximum update depth exceeded' trong React: Ngừng vòng lặp vô tận

Error: Maximum update depth exceeded. This can happen when a component calls setState inside useEffect, but useEffect either doesn't have a dependency array, or one of the dependencies changes on every render.

reactuseEffectsetStatemaximum-update-depth

reactbeginner

Sửa lỗi 'TypeError: data.map is not a function' trong React

TypeError: data.map is not a function

reactjavascriptfrontenddebugging

reactintermediate

Sửa lỗi cảnh báo 'React has detected a change in the order of Hooks'

Warning: React has detected a change in the order of Hooks called by ComponentName. This will lead to bugs and errors if not fixed. For more information, read the Rules of Hooks: https://reactjs.org/link/rules-of-hooks

reacthooksrules-of-hooksgỡ lỗi

reactintermediate

Sửa lỗi 'Prop className did not match' với styled-components trong React SSR

Warning: Prop `className` did not match. Server: "sc-bdVTJa" Client: "sc-fzoLsD"

reactstyled-componentsssrhydration

reactbeginner

Sửa lỗi 'Element type is invalid: expected a string but got: undefined' trong React

React.createElement: type is invalid -- expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.

reactjavascriptgỡ lỗifrontend

reactintermediate

Fix ChunkLoadError: Loading chunk failed trong React Production Build

ChunkLoadError: Loading chunk 3 failed. (error: https://example.com/static/js/3.chunk.js)

webpackcode-splittingreact-lazyproduction

reactintermediate

Sửa lỗi 'Cannot update a component while rendering a different component' trong React

Warning: Cannot update a component (`App`) while rendering a different component (`Child`). To locate the bad setState() call inside `Child`, follow the stack trace as described in https://reactjs.org/link/setstate-in-render

reactsetStaterenderside-effect

reactintermediate

Sửa cảnh báo 'React Hook useEffect has a missing dependency' gây ra lỗi âm thầm

React Hook useEffect has a missing dependency: 'someVariable'. Either include it or remove the dependency array.  react-hooks/exhaustive-deps

reactuseEffecteslinthooks

reactbeginner

Sửa cảnh báo 'Received true for a non-boolean attribute' khi truyền Boolean Props vào DOM Elements trong React

Warning: Received `true` for a non-boolean attribute `loading`. If you intentionally want it to appear in the DOM as a custom attribute, spell it as lowercase `loading` instead. If you accidentally passed it from a parent component, remove it from the DOM element.

dompropsboolean-attributehtml

reactbeginner

Sửa lỗi 'Rendered more hooks than during the previous render' trong React

Error: Rendered more hooks than during the previous render.

reacthooksrules-of-hooksconditional-rendering

reactintermediate

Sửa lỗi 'Function components cannot be given refs' với React.forwardRef

Warning: Function components cannot be given refs. Attempts to access this ref will fail. Did you mean to use React.forwardRef()?

reactforwardRefrefhooks

reactbeginner

Sửa lỗi 'Objects are not valid as a React child (found: object with keys {then})' — Render Promise trong JSX

Objects are not valid as a React child (found: object with keys {then}). If you meant to render a collection of children, use an array instead.

reactpromiseasyncjsx

reactbeginner

Sửa lỗi 'A component is changing an uncontrolled input to be controlled' trong React

Warning: A component is changing an uncontrolled input of type 'text' to be controlled. Input elements should not switch from uncontrolled to controlled (or vice versa).

reactformscontrolled-componentsstate

reactintermediate

Sửa lỗi 'useSearchParams() should be wrapped in a suspense boundary' trong Next.js

Error: useSearchParams() should be wrapped in a suspense boundary at page "/search". Read more: https://nextjs.org/docs/messages/missing-suspense-with-csr-bailout

reactnextjssuspenseusesearchparams

reactbeginner

Sửa lỗi: ReactDOM.render đã bị ngừng hỗ trợ trong React 18

Warning: ReactDOM.render is no longer supported in React 18. Use createRoot instead. Until you switch to the new API, your app will behave as if it's running React 17.

reactreact18lap-trinh-webjavascript

reactbeginner

Sửa lỗi React validateDOMNesting: Ngưng đặt <div> bên trong <p>

Warning: validateDOMNesting(...): <div> cannot appear as a descendant of <p>. See ... > p > div.

reactdomhtmlnesting

reactintermediate

Khắc phục cảnh báo 'React does not recognize prop on a DOM element'

Warning: React does not recognize the `isActive` prop on a DOM element. If you intentionally want it to appear in the DOM as a custom attribute, spell it as lowercase `isactive` instead.

reactphát-triển-webstyled-componentsfrontend

reactintermediate

Cách Sửa Lỗi 'Blocked by CORS Policy' trong React

Access to fetch at 'http://api.example.com' from origin 'http://localhost:3000' has been blocked by CORS policy

reactcorsapifetch

reactintermediate

Sửa cảnh báo 'useLayoutEffect does nothing on the server' trong React SSR / Next.js

Warning: useLayoutEffect does nothing on the server because its effect cannot be encoded into the server renderer's output format. This will lead to a mismatch between the initial, non-hydrated UI and the intended UI.

reactnextjsssruseLayoutEffect

reactintermediate

Sửa lỗi 'Warning: An update to inside a test was not wrapped in act(...)' trong React Testing

Warning: An update to ForwardRef inside a test was not wrapped in act(...). When testing, code that causes React state updates should be wrapped into act(...).

reacttestingactreact-testing-library

reactintermediate

Cách khắc phục lỗi 'Module not found: Can't resolve' trong React

reactbeginner

Sửa lỗi 'TypeError: Cannot destructure property 'user' of 'useContext(...)' as it is undefined'

TypeError: Cannot destructure property 'user' of 'useContext(...)' as it is undefined.

reactuseContextnextjslỗi-javascript

reactbeginner

Fix React Warning: Each Child in a List Should Have a Unique "key" Prop

Warning: Each child in a list should have a unique "key" prop.

reactkeydanh sáchmap

reactbeginner

Sửa lỗi 'No routes matched location' trong React Router

No routes matched location "/dashboard"

reactreact-routerroutingspa

reactintermediate

Fix React Màn Hình Trắng (Blank Page): App Không Render Được Mà Không Có Lỗi Console

Blank white screen with no errors in the browser (React app fails to render)

reactwhite-screenblank-pagebuild

reactbeginner

Sửa lỗi "Objects are not valid as a React child" trong React

Objects are not valid as a React child. If you meant to render a collection of children, use an array instead.

reactrenderobjectjson

reactbeginner

Sửa lỗi "Invalid hook call. Hooks can only be called inside of the body of a function component." trong React

Invalid hook call. Hooks can only be called inside of the body of a function component.

reacthooksrules-of-hooksfunction-component

reactintermediate

Fix React Memory Leak: Warning Can't Perform a React State Update on an Unmounted Component

Warning: Can't perform a React state update on an unmounted component.

reactmemory-leakunmountuseEffect

reactintermediate

Fix useEffect Infinite Loop: Warning Maximum Update Depth Exceeded trong React

Warning: Maximum update depth exceeded. This can happen when a component calls setState inside useEffect.

reactuseEffectinfinite-loopdependency-array

reactintermediate

Sửa lỗi "Cannot update a component from inside the function body of a different component" trong React

Cannot update a component from inside the function body of a different component.

reactcập nhật-statelifecycleside-effect

reactintermediate

Sửa lỗi Hydration Mismatch: "Hydration failed because the initial UI does not match what was rendered on the server"

Hydration failed because the initial UI does not match what was rendered on the server.

reacthydrationssrnextjs

reactintermediate

Sửa lỗi "Too many re-renders" trong React Component

Too many re-renders. React limits the number of renders to prevent an infinite loop.

reactre-rendervòng-lặp-vô-hạnstate

reactbeginner

Sửa lỗi TypeError: Cannot read properties of undefined (reading 'map') trong React

TypeError: Cannot read properties of undefined (reading 'map')

reactundefinedstateprops

⚛️ React Errors

Cách sửa lỗi 'SyntaxError: Unexpected token <' trong các dự án React JSX

Cách sửa cảnh báo Deprecation 'defaultProps' trong React 18.3 và 19

Ngừng gây nhiễu: Cách khắc phục lỗi 'componentWillMount has been renamed' trong React

Sửa lỗi 'Failed to execute removeChild on Node' trong React

Sửa lỗi 'This Suspense boundary received an update before it finished hydrating' trong React 18

Cách khắc phục lỗi 'A React component suspended while rendering' trong React

Sửa lỗi "It only works in a Client Component" trong Next.js App Router

Khắc phục lỗi Minified React #185: Ngăn chặn vòng lặp vô hạn trong Production

Cách sửa lỗi 'Adjacent JSX elements must be wrapped in an enclosing tag' trong React

Sửa lỗi 'Target Container is Not a DOM Element' khi cài đặt React App

Sửa lỗi 'Functions are not valid as a React child' trong React

Sửa lỗi cảnh báo 'Style Prop Expects a Mapping' trong React

Khắc phục lỗi 'ReferenceError: process is not defined' trong React + Vite

Cách khắc phục lỗi 'Could not find a declaration file for module' trong TypeScript

Khắc phục lỗi 'React.Children.only' trong các Wrapper Component của bạn

Sửa lỗi 'Maximum update depth exceeded' trong React: Ngừng vòng lặp vô tận

Sửa lỗi 'TypeError: data.map is not a function' trong React

Sửa lỗi cảnh báo 'React has detected a change in the order of Hooks'

Sửa lỗi 'Prop className did not match' với styled-components trong React SSR

Sửa lỗi 'Element type is invalid: expected a string but got: undefined' trong React

Fix ChunkLoadError: Loading chunk failed trong React Production Build

Sửa lỗi 'Cannot update a component while rendering a different component' trong React

Sửa cảnh báo 'React Hook useEffect has a missing dependency' gây ra lỗi âm thầm

Sửa cảnh báo 'Received true for a non-boolean attribute' khi truyền Boolean Props vào DOM Elements trong React

Sửa lỗi 'Rendered more hooks than during the previous render' trong React

Sửa lỗi 'Function components cannot be given refs' với React.forwardRef

Sửa lỗi 'Objects are not valid as a React child (found: object with keys {then})' — Render Promise trong JSX

Sửa lỗi 'A component is changing an uncontrolled input to be controlled' trong React

Sửa lỗi 'useSearchParams() should be wrapped in a suspense boundary' trong Next.js

Sửa lỗi: ReactDOM.render đã bị ngừng hỗ trợ trong React 18

Sửa lỗi React validateDOMNesting: Ngưng đặt <div> bên trong <p>

Khắc phục cảnh báo 'React does not recognize prop on a DOM element'

Cách Sửa Lỗi 'Blocked by CORS Policy' trong React

Sửa cảnh báo 'useLayoutEffect does nothing on the server' trong React SSR / Next.js

Sửa lỗi 'Warning: An update to inside a test was not wrapped in act(...)' trong React Testing

Cách khắc phục lỗi 'Module not found: Can't resolve' trong React

Sửa lỗi 'TypeError: Cannot destructure property 'user' of 'useContext(...)' as it is undefined'

Fix React Warning: Each Child in a List Should Have a Unique "key" Prop

Sửa lỗi 'No routes matched location' trong React Router

Fix React Màn Hình Trắng (Blank Page): App Không Render Được Mà Không Có Lỗi Console

Sửa lỗi "Objects are not valid as a React child" trong React

Sửa lỗi "Invalid hook call. Hooks can only be called inside of the body of a function component." trong React

Fix React Memory Leak: Warning Can't Perform a React State Update on an Unmounted Component

Fix useEffect Infinite Loop: Warning Maximum Update Depth Exceeded trong React

Sửa lỗi "Cannot update a component from inside the function body of a different component" trong React

Sửa lỗi Hydration Mismatch: "Hydration failed because the initial UI does not match what was rendered on the server"

Sửa lỗi "Too many re-renders" trong React Component

Sửa lỗi TypeError: Cannot read properties of undefined (reading 'map') trong React