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freeCodeCamp/curriculum/challenges/chinese-traditional/03-front-end-development-libraries/react/add-inline-styles-in-react.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: 5a24c314108439a4d4036182
title: 在 React 中添加內聯樣式
challengeType: 6
forumTopicId: 301378
dashedName: add-inline-styles-in-react
---
# --description--
在上一次挑戰中,你可能已經注意到,除了設置爲 JavaScript 對象的 `style` 屬性之外,與 HTML 內聯樣式相比React 的內聯樣式還有其他幾個語法差異。 首先,某些 CSS 樣式屬性的名稱使用駝峯式命名。 例如,最後一個挑戰用 `fontSize` 而不是 `font-size` 來設置字體的大小。 對於 JavaScript 對象屬性來說,像 `font-size` 這樣的連字符命名是無效的語法,所以 React 使用駝峯式命名。 通常,任何連字符的 style 屬性在 JSX 中都是使用駝峯式命名的。
除非另有規定,否則所有屬性值的 length`height``width``fontSize`)其單位都假定爲 `px`。 例如,如果要使用 `em`,可以用引號將值和單位括起來,例如 `{fontSize: "4em"}`。 除了默認爲 `px` 的 length 值之外,所有其他屬性值都應該用引號括起來。
# --instructions--
如果你有大量樣式,你可以將樣式 `object`(對象)分配給一個常量,以保持代碼的組織有序。 在文件頂部將你的樣式聲明爲全局變量。 定義一個 `styles` 常量,並將其聲明爲具有三個樣式屬性及對應值的 `object`(對象)。 使 `div` 的文字顏色爲 `purple`、字號爲 `40`、邊框爲 `2px solid purple`。 然後設置 `style` 屬性,使其等於 `styles` 常量。
# --hints--
`styles` 變量應該是具有三個屬性的 `object`(對象)。
```js
assert(Object.keys(styles).length === 3);
```
`styles` 變量的 `color` 屬性應該設置爲 `purple`
```js
assert(styles.color === 'purple');
```
`styles` 變量應該將 `fontSize` 屬性設置爲 `40`
```js
assert(styles.fontSize === 40);
```
`styles` 變量的 `border` 屬性應該設置爲 `2px solid purple`
```js
assert(styles.border === '2px solid purple');
```
組件應該渲染一個 `div` 元素。
```js
assert(
(function () {
const mockedComponent = Enzyme.shallow(React.createElement(Colorful));
return mockedComponent.type() === 'div';
})()
);
```
`div` 元素的樣式應該由 `styles` 對象定義。
```js
assert(
(function () {
const mockedComponent = Enzyme.shallow(React.createElement(Colorful));
return (
mockedComponent.props().style.color === 'purple' &&
mockedComponent.props().style.fontSize === 40 &&
mockedComponent.props().style.border === '2px solid purple'
);
})()
);
```
# --seed--
## --after-user-code--
```jsx
ReactDOM.render(<Colorful />, document.getElementById('root'))
```
## --seed-contents--
```jsx
// Change code above this line
class Colorful extends React.Component {
render() {
// Change code below this line
return (
<div style={{color: "yellow", fontSize: 24}}>Style Me!</div>
);
// Change code above this line
}
};
```
# --solutions--
```jsx
const styles = {
color: "purple",
fontSize: 40,
border: "2px solid purple"
};
// Change code above this line
class Colorful extends React.Component {
render() {
// Change code below this line
return (
<div style={styles}>Style Me!</div>
);
// Change code above this line
}
};
```