diff --git a/public/images/tutorial/react-starter-code-codesandbox.png b/public/images/tutorial/react-starter-code-codesandbox.png old mode 100644 new mode 100755 index d65f161bc..b01e18297 Binary files a/public/images/tutorial/react-starter-code-codesandbox.png and b/public/images/tutorial/react-starter-code-codesandbox.png differ diff --git a/src/components/DocsFooter.tsx b/src/components/DocsFooter.tsx index 5f2330e7e..93c2ca125 100644 --- a/src/components/DocsFooter.tsx +++ b/src/components/DocsFooter.tsx @@ -80,7 +80,7 @@ function FooterLink({ />
- {type} + {type === 'Previous' ? 'Previous' : 'Next'} {title} diff --git a/src/components/Icon/IconArrowSmall.tsx b/src/components/Icon/IconArrowSmall.tsx index 4a3d3ad02..a70717c9d 100644 --- a/src/components/Icon/IconArrowSmall.tsx +++ b/src/components/Icon/IconArrowSmall.tsx @@ -19,6 +19,7 @@ export const IconArrowSmall = memo< const classes = cn(className, { 'rotate-180': displayDirection === 'left', 'rotate-180 rtl:rotate-0': displayDirection === 'start', + 'rtl:rotate-180': displayDirection === 'end', 'rotate-90': displayDirection === 'down', }); return ( diff --git a/src/components/MDX/Challenges/Navigation.tsx b/src/components/MDX/Challenges/Navigation.tsx index 736db093c..b4d8c0924 100644 --- a/src/components/MDX/Challenges/Navigation.tsx +++ b/src/components/MDX/Challenges/Navigation.tsx @@ -108,7 +108,7 @@ export function Navigation({ onClick={handleScrollLeft} aria-label="Scroll left" className={cn( - 'bg-secondary-button dark:bg-secondary-button-dark h-8 px-2 rounded-l border-gray-20 border-r rtl:rotate-180', + 'bg-secondary-button dark:bg-secondary-button-dark h-8 px-2 rounded-l rtl:rounded-r rtl:rounded-l-none border-gray-20 border-r rtl:border-l rtl:border-r-0', { 'text-primary dark:text-primary-dark': canScrollLeft, 'text-gray-30': !canScrollLeft, @@ -120,7 +120,7 @@ export function Navigation({ onClick={handleScrollRight} aria-label="Scroll right" className={cn( - 'bg-secondary-button dark:bg-secondary-button-dark h-8 px-2 rounded-e rtl:rotate-180', + 'bg-secondary-button dark:bg-secondary-button-dark h-8 px-2 rounded-e', { 'text-primary dark:text-primary-dark': canScrollRight, 'text-gray-30': !canScrollRight, diff --git a/src/content/blog/2025/04/23/react-labs-view-transitions-activity-and-more.md b/src/content/blog/2025/04/23/react-labs-view-transitions-activity-and-more.md index 0f54d02b4..333334073 100644 --- a/src/content/blog/2025/04/23/react-labs-view-transitions-activity-and-more.md +++ b/src/content/blog/2025/04/23/react-labs-view-transitions-activity-and-more.md @@ -2521,7 +2521,7 @@ export default function App() { const { url } = useRouter(); // Define a default animation of .slow-fade. - // See animations.css for the animation definiton. + // See animations.css for the animation definition. return ( {url === '/' ? :
} diff --git a/src/content/community/conferences.md b/src/content/community/conferences.md index 581046a8c..9354dc9c3 100644 --- a/src/content/community/conferences.md +++ b/src/content/community/conferences.md @@ -20,6 +20,11 @@ October 2-4, 2025. Alicante, Spain. [Website](https://reactalicante.es/) - [Twitter](https://x.com/ReactAlicante) - [Bluesky](https://bsky.app/profile/reactalicante.es) - [YouTube](https://www.youtube.com/channel/UCaSdUaITU1Cz6PvC97A7e0w) +### RenderCon Kenya 2025 {/*rendercon-kenya-2025*/} +October 04, 2025. Nairobi, Kenya + +[Website](https://rendercon.org/) - [Twitter](https://twitter.com/renderconke) - [LinkedIn](https://www.linkedin.com/company/renderconke/) - [YouTube](https://www.youtube.com/channel/UC0bCcG8gHUL4njDOpQGcMIA) + ### React Conf 2025 {/*react-conf-2025*/} October 7-8, 2025. Henderson, Nevada, USA and free livestream diff --git a/src/content/community/meetups.md b/src/content/community/meetups.md index 479ae50d4..78d48093a 100644 --- a/src/content/community/meetups.md +++ b/src/content/community/meetups.md @@ -58,6 +58,7 @@ Do you have a local React.js meetup? Add it here! (Please keep the list alphabet * [Manchester](https://www.meetup.com/Manchester-React-User-Group/) * [React.JS Girls London](https://www.meetup.com/ReactJS-Girls-London/) * [React Advanced London](https://guild.host/react-advanced-london) +* [React Native Liverpool](https://www.meetup.com/react-native-liverpool/) * [React Native London](https://guild.host/RNLDN) ## Finland {/*finland*/} @@ -137,6 +138,9 @@ Do you have a local React.js meetup? Add it here! (Please keep the list alphabet ## Portugal {/*portugal*/} * [Lisbon](https://www.meetup.com/JavaScript-Lisbon/) +## Scotland (UK) {/*scotland-uk*/} +* [Edinburgh](https://www.meetup.com/react-edinburgh/) + ## Spain {/*spain*/} * [Barcelona](https://www.meetup.com/ReactJS-Barcelona/) diff --git a/src/content/learn/build-a-react-app-from-scratch.md b/src/content/learn/build-a-react-app-from-scratch.md index b5f29e9af..185b693b1 100644 --- a/src/content/learn/build-a-react-app-from-scratch.md +++ b/src/content/learn/build-a-react-app-from-scratch.md @@ -122,7 +122,7 @@ For code-splitting instructions, see your build tool docs: ### Improving Application Performance {/*improving-application-performance*/} -Since the build tool you select only support single page apps (SPAs) you'll need to implement other [rendering patterns](https://www.patterns.dev/vanilla/rendering-patterns) like server-side rendering (SSR), static site generation (SSG), and/or React Server Components (RSC). Even if you don't need these features at first, in the future there may be some routes that would benefit SSR, SSG or RSC. +Since the build tool you select only supports single page apps (SPAs), you'll need to implement other [rendering patterns](https://www.patterns.dev/vanilla/rendering-patterns) like server-side rendering (SSR), static site generation (SSG), and/or React Server Components (RSC). Even if you don't need these features at first, in the future there may be some routes that would benefit SSR, SSG or RSC. * **Single-page apps (SPA)** load a single HTML page and dynamically updates the page as the user interacts with the app. SPAs are easier to get started with, but they can have slower initial load times. SPAs are the default architecture for most build tools. diff --git a/src/content/learn/manipulating-the-dom-with-refs.md b/src/content/learn/manipulating-the-dom-with-refs.md index 2053f936b..2d1ee8685 100644 --- a/src/content/learn/manipulating-the-dom-with-refs.md +++ b/src/content/learn/manipulating-the-dom-with-refs.md @@ -211,7 +211,7 @@ This is because **Hooks must only be called at the top-level of your component.* One possible way around this is to get a single ref to their parent element, and then use DOM manipulation methods like [`querySelectorAll`](https://developer.mozilla.org/en-US/docs/Web/API/Document/querySelectorAll) to "find" the individual child nodes from it. However, this is brittle and can break if your DOM structure changes. -Another solution is to **pass a function to the `ref` attribute.** This is called a [`ref` callback.](/reference/react-dom/components/common#ref-callback) React will call your ref callback with the DOM node when it's time to set the ref, and with `null` when it's time to clear it. This lets you maintain your own array or a [Map](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map), and access any ref by its index or some kind of ID. +Another solution is to **pass a function to the `ref` attribute.** This is called a [`ref` callback.](/reference/react-dom/components/common#ref-callback) React will call your ref callback with the DOM node when it's time to set the ref, and call the cleanup function returned from the callback when it's time to clear it. This lets you maintain your own array or a [Map](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map), and access any ref by its index or some kind of ID. This example shows how you can use this approach to scroll to an arbitrary node in a long list: @@ -247,13 +247,13 @@ export default function CatFriends() {
    {catList.map((cat) => (
  • { const map = getMap(); map.set(cat, node); @@ -263,7 +263,7 @@ export default function CatFriends() { }; }} > - +
    • ))}
@@ -273,11 +273,22 @@ export default function CatFriends() { } function setupCatList() { - const catList = []; - for (let i = 0; i < 10; i++) { - catList.push("https://loremflickr.com/320/240/cat?lock=" + i); + const catCount = 10; + const catList = new Array(catCount) + for (let i = 0; i < catCount; i++) { + let imageUrl = ''; + if (i < 5) { + imageUrl = "https://placecats.com/neo/320/240"; + } else if (i < 8) { + imageUrl = "https://placecats.com/millie/320/240"; + } else { + imageUrl = "https://placecats.com/bella/320/240"; + } + catList[i] = { + id: i, + imageUrl, + }; } - return catList; } @@ -876,12 +887,30 @@ export default function CatFriends() { ); } -const catList = []; -for (let i = 0; i < 10; i++) { - catList.push({ +const catCount = 10; +const catList = new Array(catCount); +for (let i = 0; i < catCount; i++) { + const bucket = Math.floor(Math.random() * catCount) % 2; + let imageUrl = ''; + switch (bucket) { + case 0: { + imageUrl = "https://placecats.com/neo/250/200"; + break; + } + case 1: { + imageUrl = "https://placecats.com/millie/250/200"; + break; + } + case 2: + default: { + imageUrl = "https://placecats.com/bella/250/200"; + break; + } + } + catList[i] = { id: i, - imageUrl: 'https://loremflickr.com/250/200/cat?lock=' + i - }); + imageUrl, + }; } ``` @@ -961,7 +990,7 @@ export default function CatFriends() { behavior: 'smooth', block: 'nearest', inline: 'center' - }); + }); }}> Next @@ -993,12 +1022,30 @@ export default function CatFriends() { ); } -const catList = []; -for (let i = 0; i < 10; i++) { - catList.push({ +const catCount = 10; +const catList = new Array(catCount); +for (let i = 0; i < catCount; i++) { + const bucket = Math.floor(Math.random() * catCount) % 2; + let imageUrl = ''; + switch (bucket) { + case 0: { + imageUrl = "https://placecats.com/neo/250/200"; + break; + } + case 1: { + imageUrl = "https://placecats.com/millie/250/200"; + break; + } + case 2: + default: { + imageUrl = "https://placecats.com/bella/250/200"; + break; + } + } + catList[i] = { id: i, - imageUrl: 'https://loremflickr.com/250/200/cat?lock=' + i - }); + imageUrl, + }; } ``` diff --git a/src/content/learn/react-compiler/introduction.md b/src/content/learn/react-compiler/introduction.md index 96fdf70db..9957b8227 100644 --- a/src/content/learn/react-compiler/introduction.md +++ b/src/content/learn/react-compiler/introduction.md @@ -50,6 +50,21 @@ const ExpensiveComponent = memo(function ExpensiveComponent({ data, onClick }) { }); ``` + + + +This manual memoization has a subtle bug that breaks memoization: + +```js [[2, 1, "() => handleClick(item)"]] + handleClick(item)} /> +``` + +Even though `handleClick` is wrapped in `useCallback`, the arrow function `() => handleClick(item)` creates a new function every time the component renders. This means that `Item` will always receive a new `onClick` prop, breaking memoization. + +React Compiler is able to optimize this correctly with or without the arrow function, ensuring that `Item` only re-renders when `props.onClick` changes. + + + ### After React Compiler {/*after-react-compiler*/} With React Compiler, you write the same code without manual memoization: @@ -74,7 +89,7 @@ function ExpensiveComponent({ data, onClick }) { _[See this example in the React Compiler Playground](https://playground.react.dev/#N4Igzg9grgTgxgUxALhAMygOzgFwJYSYAEAogB4AOCmYeAbggMIQC2Fh1OAFMEQCYBDHAIA0RQowA2eOAGsiAXwCURYAB1iROITA4iFGBERgwCPgBEhAogF4iCStVoMACoeO1MAcy6DhSgG4NDSItHT0ACwFMPkkmaTlbIi48HAQWFRsAPlUQ0PFMKRlZFLSWADo8PkC8hSDMPJgEHFhiLjzQgB4+eiyO-OADIwQTM0thcpYBClL02xz2zXz8zoBJMqJZBABPG2BU9Mq+BQKiuT2uTJyomLizkoOMk4B6PqX8pSUFfs7nnro3qEapgFCAFEA)_ -React Compiler automatically applies the equivalent optimizations, ensuring your app only re-renders when necessary. +React Compiler automatically applies the optimal memoization, ensuring your app only re-renders when necessary. #### What kind of memoization does React Compiler add? {/*what-kind-of-memoization-does-react-compiler-add*/} diff --git a/src/content/learn/reusing-logic-with-custom-hooks.md b/src/content/learn/reusing-logic-with-custom-hooks.md index b6562e2df..de68dd190 100644 --- a/src/content/learn/reusing-logic-with-custom-hooks.md +++ b/src/content/learn/reusing-logic-with-custom-hooks.md @@ -1419,10 +1419,29 @@ Similar to a [design system,](https://uxdesign.cc/everything-you-need-to-know-ab #### Will React provide any built-in solution for data fetching? {/*will-react-provide-any-built-in-solution-for-data-fetching*/} +Today, with the [`use`](/reference/react/use#streaming-data-from-server-to-client) API, data can be read in render by passing a [Promise](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise) to `use`: + +```js {1,4,11} +import { use, Suspense } from "react"; + +function Message({ messagePromise }) { + const messageContent = use(messagePromise); + return

Here is the message: {messageContent}

; +} + +export function MessageContainer({ messagePromise }) { + return ( + ⌛Downloading message...

}> + + + ); +} +``` + We're still working out the details, but we expect that in the future, you'll write data fetching like this: ```js {1,4,6} -import { use } from 'react'; // Not available yet! +import { use } from 'react'; function ShippingForm({ country }) { const cities = use(fetch(`/api/cities?country=${country}`)); diff --git a/src/content/learn/tutorial-tic-tac-toe.md b/src/content/learn/tutorial-tic-tac-toe.md index 2022ceeee..b7c4e45f9 100644 --- a/src/content/learn/tutorial-tic-tac-toe.md +++ b/src/content/learn/tutorial-tic-tac-toe.md @@ -283,7 +283,7 @@ CodeSandbox లో మీరు మూడు ప్రధాన విభాగ ![CodeSandbox స్టార్టర్ కోడ్](../images/tutorial/react-starter-code-codesandbox.png) -1. `App.js`, `index.js`, `styles.css` వంటి ఫైల్‌ల జాబితా మరియు `public` అనే ఫోల్డర్‌తో _Files_ విభాగం +1. `src` ఫోల్డర్‌లో `App.js`, `index.js`, `styles.css` వంటి ఫైల్‌ల జాబితా మరియు `public` అనే ఫోల్డర్‌తో _Files_ విభాగం 1. _కోడ్ ఎడిటర్_ ఇక్కడ మీరు ఎంచుకున్న ఫైల్ యొక్క సోర్స్ కోడ్‌ని మీరు చూస్తారు 1. మీరు వ్రాసిన కోడ్ ఎలా ప్రదర్శించబడుతుందో మీరు చూసే _browser_ విభాగం diff --git a/src/content/learn/typescript.md b/src/content/learn/typescript.md index 213e52474..60caf3738 100644 --- a/src/content/learn/typescript.md +++ b/src/content/learn/typescript.md @@ -32,13 +32,13 @@ TypeScript అనేది JavaScript కోడ్‌బేస్‌లకు React యొక్క టైప్ డెఫినిషన్ల లేటెస్ట్ వెర్షన్ను ఇన్‌స్టాల్ చేయడానికి: -npm install @types/react @types/react-dom +npm install --save-dev @types/react @types/react-dom మీ `tsconfig.json` లో, క్రింది కంపైలర్ ఆప్షన్స్ ని సెట్ చేయాలి: 1. [`lib`](https://www.typescriptlang.org/tsconfig/#lib) లో `dom` ఉండాలి (గమనిక: ఎలాంటి `lib` ఆప్షన్ స్పెసిఫ్య్ చేయలేదు అంటే, `dom` డిఫాల్ట్ గా ఉంటుంది). -1. [`jsx`](https://www.typescriptlang.org/tsconfig/#jsx) ని తప్పనిసరిగా వెలిడ్ అయ్యే ఆప్షన్లలో ఒకదానికి సెట్ చేయాలి. చాలా అప్లికేషన్స్‌కి `preserve` సరిపోతుంది. +2. [`jsx`](https://www.typescriptlang.org/tsconfig/#jsx) ని తప్పనిసరిగా వెలిడ్ అయ్యే ఆప్షన్లలో ఒకదానికి సెట్ చేయాలి. చాలా అప్లికేషన్స్‌కి `preserve` సరిపోతుంది. మీరు లైబ్రరీని పబ్లిష్ చేస్తున్నట్లు అయితే, ఎలాంటి వేల్యూ ను ఎంచుకోవాలో తెలుసుకోవడానికి [`jsx` డాక్యుమెంటేషన్](https://www.typescriptlang.org/tsconfig/#jsx) ను సంప్రదించండి. ## TypeScript లో React కాంపోనెంట్లను ఎలా రాయడం {/*typescript-with-react-components*/} diff --git a/src/content/reference/react-dom/components/form.md b/src/content/reference/react-dom/components/form.md index 356637bcd..b17b1a40b 100644 --- a/src/content/reference/react-dom/components/form.md +++ b/src/content/reference/react-dom/components/form.md @@ -38,7 +38,7 @@ To create interactive controls for submitting information, render the [built-in `
` supports all [common element props.](/reference/react-dom/components/common#common-props) -[`action`](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/form#action): a URL or function. When a URL is passed to `action` the form will behave like the HTML form component. When a function is passed to `action` the function will handle the form submission. The function passed to `action` may be async and will be called with a single argument containing the [form data](https://developer.mozilla.org/en-US/docs/Web/API/FormData) of the submitted form. The `action` prop can be overridden by a `formAction` attribute on a `