ee1e8abd87
* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.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，你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 应具有值为`LOGIN`的键值类型。
|
||
|
||
```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;
|
||
};
|
||
```
|