5075f14248
* chore(i8n,learn): processed translations * Update curriculum/challenges/chinese/01-responsive-web-design/applied-visual-design/use-the-u-tag-to-underline-text.md Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com> Co-authored-by: Crowdin Bot <support+bot@crowdin.com> Co-authored-by: Nicholas Carrigan (he/him) <nhcarrigan@gmail.com> Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>
58 lines
1.1 KiB
Markdown
58 lines
1.1 KiB
Markdown
---
|
||
id: 5a24c314108439a4d403614e
|
||
title: 定义一个 Action Creator
|
||
challengeType: 6
|
||
forumTopicId: 301441
|
||
dashedName: define-an-action-creator
|
||
---
|
||
|
||
# --description--
|
||
|
||
创建 action 后要将 action 发送到 Redux store，以便它可以更新其状态。 在 Redux 中，可以定义动作创建器来完成此任务， action creator 只是一个返回动作的 JavaScript 函数， 换句话说，action creator 创建表示动作事件的对象。
|
||
|
||
# --instructions--
|
||
|
||
定义名为 `actionCreator()` 的函数，该函数在调用时返回 `action` 对象。
|
||
|
||
# --hints--
|
||
|
||
函数 `actionCreator` 应该存在。
|
||
|
||
```js
|
||
assert(typeof actionCreator === 'function');
|
||
```
|
||
|
||
运行 `actionCreator` 函数应返回 `action` 对象。
|
||
|
||
```js
|
||
assert(typeof action === 'object');
|
||
```
|
||
|
||
返回的 `action` 对象应该有一个值为 `LOGIN` 的 `type` 属性。
|
||
|
||
```js
|
||
assert(action.type === 'LOGIN');
|
||
```
|
||
|
||
# --seed--
|
||
|
||
## --seed-contents--
|
||
|
||
```js
|
||
const action = {
|
||
type: 'LOGIN'
|
||
}
|
||
// Define an action creator here:
|
||
```
|
||
|
||
# --solutions--
|
||
|
||
```js
|
||
const action = {
|
||
type: 'LOGIN'
|
||
}
|
||
const actionCreator = () => {
|
||
return action;
|
||
};
|
||
```
|