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

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---
id: 5a24c314108439a4d403614f
title: 分发 Action Event
challengeType: 6
forumTopicId: 301442
dashedName: dispatch-an-action-event
---
# --description--
`dispatch` 方法用于将 action 分派给 Redux store 调用 `store.dispatch()` 将从 action creator 返回的值发送回 store。
回想一下,动作创建者返回一个具有 type 属性的对象,该属性指定已发生的动作。 然后该方法会将一个 action 对象发送到 Redux store。 基于上一个挑战的示例,下面的行是等效的,两者都会调度类 `LOGIN` 类型的 action
```js
store.dispatch(actionCreator());
store.dispatch({ type: 'LOGIN' });
```
# --instructions--
代码编辑器中的 Redux store 具有初始化状过的 state包含 `login` 属性当前设置为 `false`的对象, 还有一个名为 `loginAction()` 的 action creator它返回类型为 `LOGIN` 的 action 然后通过调用 `dispatch` 方法将 `LOGIN` 的 action dispatch 给 Redux store并传入 `loginAction()` 创建的 action。
# --hints--
调用函数 `loginAction` 应该返回一个 `type` 属性设置为字符串 `LOGIN` 的对象。
```js
assert(loginAction().type === 'LOGIN');
```
store 应该用属性 `login` 设置为 `false` 的对象初始化。
```js
assert(store.getState().login === false);
```
`store.dispatch()` 方法应该被用于 dispatch 一个类型为 `LOGIN` 的 action。
```js
(getUserInput) =>
assert(
(function () {
let noWhiteSpace = getUserInput('index').replace(/\s/g, '');
return (
noWhiteSpace.includes('store.dispatch(loginAction())') ||
noWhiteSpace.includes("store.dispatch({type: 'LOGIN'})") === true
);
})()
);
```
# --seed--
## --seed-contents--
```js
const store = Redux.createStore(
(state = {login: false}) => state
);
const loginAction = () => {
return {
type: 'LOGIN'
}
};
// Dispatch the action here:
```
# --solutions--
```js
const store = Redux.createStore(
(state = {login: false}) => state
);
const loginAction = () => {
return {
type: 'LOGIN'
}
};
store.dispatch(loginAction());
```