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>
This commit is contained in:
Shaun Hamilton
2021-08-14 03:57:13 +01:00
committed by GitHub
parent 4df2a0c542
commit c2a11ad00d
1215 changed files with 790 additions and 449 deletions

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@ -0,0 +1,102 @@
---
id: 5a24c314108439a4d4036163
title: 创建一个 React 组件
challengeType: 6
forumTopicId: 301386
dashedName: create-a-react-component
---
# --description--
定义 React 组件的另一种方法是使用 ES6 的 `class`语法。 在以下示例中,`Kitten` 扩展了`React.Component`
```jsx
class Kitten extends React.Component {
constructor(props) {
super(props);
}
render() {
return (
<h1>Hi</h1>
);
}
}
```
这将创建一个 ES6 类 `Kitten`,它扩展了 `React.Component` 类。 因此,`Kitten` 类现在可以访问许多有用的 React 功能,例如本地状态和生命周期钩子。 如果还不熟悉这些术语,请不要担心,在以后的挑战中我们将更详细地介绍它们。 另请注意,`Kitten` 类中定义了一个调用 `super()` 方法的 `constructor`。 它使用 `super()` 调用父类的构造函数,即本例中的 `React.Component`。 构造函数是使用 `class` 关键字创建的特殊方法,它在实例初始化之前调用。 最佳做法是在组件的 `constructor` 里调用 `super`,并将 `props` 传递给它们, 这样可以保证组件能够正确地初始化。 目前为止 ,需要知道这些代码是必要的。 很快会了解到到构造函数的其他用途以及 `props`
# --instructions--
`MyComponent` 是使用类语法在代码编辑器中定义的。 完成 `render` 方法的编写,使其返回 `div` 元素,其中包含文本内容为 `Hello React!``h1` 元素。
# --hints--
该 React 组件应该返回一个 `div` 元素。
```js
assert(Enzyme.shallow(React.createElement(MyComponent)).type() === 'div');
```
返回的 `div` 中应该渲染一个 `h1` 标题。
```js
assert(
/<div><h1>.*<\/h1><\/div>/.test(
Enzyme.shallow(React.createElement(MyComponent)).html()
)
);
```
`h1` 标题中应该包含字符串 `Hello React!`
```js
assert(
Enzyme.shallow(React.createElement(MyComponent)).html() ===
'<div><h1>Hello React!</h1></div>'
);
```
# --seed--
## --after-user-code--
```jsx
ReactDOM.render(<MyComponent />, document.getElementById('root'))
```
## --seed-contents--
```jsx
class MyComponent extends React.Component {
constructor(props) {
super(props);
}
render() {
// Change code below this line
// Change code above this line
}
};
```
# --solutions--
```jsx
class MyComponent extends React.Component {
constructor(props) {
super(props);
}
render() {
// Change code below this line
return (
<div>
<h1>Hello React!</h1>
</div>
);
// Change code above this line
}
};
```