Files
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
5a24c314108439a4d4036141 React 和 Redux 入門 6 301430 getting-started-with-react-redux

--description--

這一系列挑戰介紹的是 Redux 和 React 的配合, 我們先來回顧一下這兩種技術的關鍵原則是什麼。 React 是提供數據的視圖庫,能以高效、可預測的方式渲染視圖。 Redux 是狀態管理框架,可用於簡化 APP 應用狀態的管理。 在 React Redux app 應用中,通常可創建單一的 Redux store 來管理整個應用的狀態。 React 組件僅訂閱 store 中與其角色相關的數據, 可直接從 React 組件中分發 actions 以觸發 store 對象的更新。

React 組件可以在本地管理自己的狀態,但是對於複雜的應用來說,它的狀態最好是用 Redux 保存在單一位置,有特定本地狀態的獨立組件例外。 當單個組件可能僅具有特定於其的本地狀態時,算是例外。 最後一點是Redux 沒有內置的 React 支持,需要安裝 react-redux包, 通過這個方式把 Redux 的 statedispatch 作爲 props 傳給組件。

在接下來的挑戰中,先要創建一個可輸入新文本消息的 React 組件, 添加這些消息到數組裏,在視圖上顯示數組。 這應該是 React 課程中的一個很好的回顧。 接着,創建 Redux store 和 actions 來管理消息數組的狀態。 最後,使用 react-redux 連接 Redux store 和組件,從而將本地狀態提取到 Redux store 中。

--instructions--

DisplayMessages 組件開始。 把構造函數添加到此組件中,使用含兩個屬性的狀態初始化該組件,這兩個屬性爲:input(設置爲空字符串),messages(設置爲空數組)。

--hints--

DisplayMessages 組件應渲染空的 div 元素。

assert(
  (function () {
    const mockedComponent = Enzyme.mount(React.createElement(DisplayMessages));
    return mockedComponent.find('div').text() === '';
  })()
);

DisplayMessages 組件的構造函數應調用 super,傳入 props

(getUserInput) =>
  assert(
    (function () {
      const noWhiteSpace = __helpers.removeWhiteSpace(getUserInput('index'));
      return (
        noWhiteSpace.includes('constructor(props)') &&
        noWhiteSpace.includes('super(props')
      );
    })()
  );

DisplayMessages 組件的初始狀態應是 {input: "", messages: []}

assert(
  (function () {
    const mockedComponent = Enzyme.mount(React.createElement(DisplayMessages));
    const initialState = mockedComponent.state();
    return (
      typeof initialState === 'object' &&
      initialState.input === '' &&
      Array.isArray(initialState.messages) &&
      initialState.messages.length === 0
    );
  })()
);

--seed--

--after-user-code--

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

--seed-contents--

class DisplayMessages extends React.Component {
  // Change code below this line

  // Change code above this line
  render() {
    return <div />
  }
};

--solutions--

class DisplayMessages extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      input: '',
      messages: []
    }
  }
  render() {
    return <div/>
  }
};