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freeCodeCamp/curriculum/challenges/chinese-traditional/03-front-end-development-libraries/react/render-react-on-the-server-with-rendertostring.md
Shaun Hamilton c2a11ad00d feat: add 'back/front end' in curriculum (#42596)
* chore: rename APIs and Microservices to include "Backend" (#42515)

* fix typo

* fix typo

* undo change

* Corrected grammar mistake

Corrected a grammar mistake by removing a comma.

* change APIs and Microservices cert title

* update title

* Change APIs and Microservices certi title

* Update translations.json

* update title

* feat(curriculum): rename apis and microservices cert

* rename folder structure

* rename certificate

* rename learn Markdown

* apis-and-microservices -> back-end-development-and-apis

* update backend meta

* update i18n langs and cypress test

Co-authored-by: Shaun Hamilton <shauhami020@gmail.com>

* fix: add development to front-end libraries (#42512)

* fix: added-the-word-Development-to-front-end-libraries

* fix/added-the-word-Development-to-front-end-libraries

* fix/added-word-development-to-front-end-libraries-in-other-related-files

* fix/added-the-word-Development-to-front-end-and-all-related-files

* fix/removed-typos-from-last-commit-in-index.md

* fix/reverted-changes-that-i-made-to-dependecies

* fix/removed xvfg

* fix/reverted changes that i made to package.json

* remove unwanted changes

* front-end-development-libraries changes

* rename backend certSlug and README

* update i18n folder names and keys

* test: add legacy path redirect tests

This uses serve.json from the client-config repo, since we currently use
that in production

* fix: create public dir before moving serve.json

* fix: add missing script

* refactor: collect redirect tests

* test: convert to cy.location for stricter tests

* rename certificate folder to 00-certificates

* change crowdin config to recognise new certificates location

* allow translations to be used

Co-authored-by: Nicholas Carrigan (he/him) <nhcarrigan@gmail.com>

* add forwards slashes to path redirects

* fix cypress path tests again

* plese cypress

* fix: test different challenge

Okay so I literally have no idea why this one particular challenge
fails in Cypress Firefox ONLY. Tom and I paired and spun a full build
instance and confirmed in Firefox the page loads and redirects as
expected. Changing to another bootstrap challenge passes Cypress firefox
locally. Absolutely boggled by this.

AAAAAAAAAAAAAAA

* fix: separate the test

Okay apparently the test does not work unless we separate it into
a different `it` statement.

>:( >:( >:( >:(

Co-authored-by: Sujal Gupta <55016909+heysujal@users.noreply.github.com>
Co-authored-by: Noor Fakhry <65724923+NoorFakhry@users.noreply.github.com>
Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>
Co-authored-by: Nicholas Carrigan (he/him) <nhcarrigan@gmail.com>
2021-08-13 21:57:13 -05:00

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id, title, challengeType, forumTopicId, dashedName
id title challengeType forumTopicId dashedName
5a24c314108439a4d403618d 用 renderToString 在服務器上渲染 React 6 301407 render-react-on-the-server-with-rendertostring

--description--

到目前爲止,已經能夠在客戶端上渲染 React 組件, 一般來說我們都是這麼做的。 然而,在一些用例中,需要在服務器上渲染一個 React 組件。 由於 React 是一個 JavaScript 視圖庫,所以通常使用 Node 讓 JavaScript 運行在服務器上。 事實上React 提供了一個可用於此目的的 renderToString() 方法。

有兩個關鍵原因可以解釋爲什麼服務器上的渲染可能會在真實世界的應用程序中使用。 首先,如果不這樣做,當 React 應用程序最初加載到瀏覽器時,它將包含一個代碼量很少的 HTML 文件和一大堆 JavaScript。 這對於搜索引擎來說可能不太理想,因爲它們試圖爲網頁內容生成索引,以便人們可以找到這個應用。 如果在服務器上渲染初始 HTML 標記並將其發送到客戶端,則初始頁面加載的內容包含搜索引擎可以抓取的所有頁面標記。 其次,這創造了更快的初始頁面加載體驗,因爲渲染的 HTML 代碼量要比整個應用程序的 JavaScript 代碼小。 React 仍然能夠識別你的應用並在初始加載後進行管理。

--instructions--

renderToString() 方法由 ReactDOMServer 提供,在這裏已爲你定義成全局變量。 這個方法接收一個 React 元素作爲參數。 用它來把 App 渲染成字符串。

--hints--

App 組件應該使用 ReactDOMServer.renderToString 渲染一個字符串。

(getUserInput) =>
  assert(
    getUserInput('index')
      .replace(/ /g, '')
      .includes('ReactDOMServer.renderToString(<App/>)') &&
      Enzyme.mount(React.createElement(App)).children().name() === 'div'
  );

--seed--

--before-user-code--

var ReactDOMServer = { renderToString(x) { return null; } };

--after-user-code--

ReactDOM.render(<App />, document.getElementById('root'))

--seed-contents--

class App extends React.Component {
  constructor(props) {
    super(props);
  }
  render() {
    return <div/>
  }
};

// Change code below this line

--solutions--

class App extends React.Component {
  constructor(props) {
    super(props);
  }
  render() {
    return <div/>
  }
};

// Change code below this line
ReactDOMServer.renderToString(<App/>);