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

3.2 KiB

id, title, challengeType, forumTopicId, dashedName
id title challengeType forumTopicId dashedName
5a24c314108439a4d4036165 使用 React 渲染嵌套组件 6 301420 use-react-to-render-nested-components

--description--

上一个挑战显示了组合两个组件的简单方法,但是有许多不同的方法可以把 React 组件组合在一起。

组件组合是 React 的强大功能之一。 当使用 React 时,应当先用组件的思路考虑清楚用户界面的结构(如上一个挑战中的 App 示例)。 可以将 UI 分解为基本的构建块,这些构建块就是组件。 这样做有助于将负责 UI 的代码与负责处理应用程序逻辑的代码分开, 并可以大大简化复杂项目的开发和维护。

--instructions--

代码编辑器中定义了两个功能组件,分别是 TypesOfFruitFruits。 请用组合或者嵌套TypesOfFruit 组件放到 Fruits 组件中, 然后把 Fruits 组件放到 TypesOfFood 组件中。 结果应该是子组件嵌套在父组件中,父组件嵌套在它本身的父组件中!

--hints--

TypesOfFood 组件应该返回单个 div 元素。

assert(Enzyme.shallow(React.createElement(TypesOfFood)).type() === 'div');

TypesOfFood 组件应该返回 Fruits 组件。

assert(
  Enzyme.shallow(React.createElement(TypesOfFood)).props().children[1].type
    .name === 'Fruits'
);

Fruits 组件应该返回 TypesOfFruit 组件。

assert(
  Enzyme.mount(React.createElement(TypesOfFood)).find('h2').html() ===
    '<h2>Fruits:</h2>'
);

TypesOfFruit 组件应该返回 h2ul 元素。

assert(
  Enzyme.mount(React.createElement(TypesOfFood)).find('ul').text() ===
    'ApplesBlueberriesStrawberriesBananas'
);

--seed--

--after-user-code--

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

--seed-contents--

const TypesOfFruit = () => {
  return (
    <div>
      <h2>Fruits:</h2>
      <ul>
        <li>Apples</li>
        <li>Blueberries</li>
        <li>Strawberries</li>
        <li>Bananas</li>
      </ul>
    </div>
  );
};

const Fruits = () => {
  return (
    <div>
      { /* Change code below this line */ }

      { /* Change code above this line */ }
    </div>
  );
};

class TypesOfFood extends React.Component {
  constructor(props) {
    super(props);
  }

  render() {
    return (
      <div>
        <h1>Types of Food:</h1>
        { /* Change code below this line */ }

        { /* Change code above this line */ }
      </div>
    );
  }
};

--solutions--

const TypesOfFruit = () => {
  return (
    <div>
      <h2>Fruits:</h2>
      <ul>
        <li>Apples</li>
        <li>Blueberries</li>
        <li>Strawberries</li>
        <li>Bananas</li>
      </ul>
    </div>
  );
};

const Fruits = () => {
  return (
    <div>
      { /* Change code below this line */ }
        <TypesOfFruit />
      { /* Change code above this line */ }
    </div>
  );
};

class TypesOfFood extends React.Component {
  constructor(props) {
    super(props);
  }

  render() {
    return (
      <div>
        <h1>Types of Food:</h1>
        { /* Change code below this line */ }
        <Fruits />
        { /* Change code above this line */ }
      </div>
    );
  }
};