* 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>
86 lines
2.1 KiB
Markdown
86 lines
2.1 KiB
Markdown
---
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id: 5a24c314108439a4d403614f
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title: 分发 Action Event
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challengeType: 6
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forumTopicId: 301442
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dashedName: dispatch-an-action-event
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---
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# --description--
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`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。
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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:
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```js
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store.dispatch(actionCreator());
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store.dispatch({ type: 'LOGIN' });
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```
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# --instructions--
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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。
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# --hints--
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调用函数 `loginAction` 应该返回一个 `type` 属性设置为字符串 `LOGIN` 的对象。
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```js
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assert(loginAction().type === 'LOGIN');
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```
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store 应该用属性 `login` 设置为 `false` 的对象初始化。
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```js
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assert(store.getState().login === false);
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```
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`store.dispatch()` 方法应该被用于 dispatch 一个类型为 `LOGIN` 的 action。
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```js
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(getUserInput) =>
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assert(
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(function () {
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let noWhiteSpace = getUserInput('index').replace(/\s/g, '');
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return (
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noWhiteSpace.includes('store.dispatch(loginAction())') ||
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noWhiteSpace.includes("store.dispatch({type: 'LOGIN'})") === true
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);
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})()
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);
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```
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# --seed--
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## --seed-contents--
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```js
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const store = Redux.createStore(
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(state = {login: false}) => state
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);
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const loginAction = () => {
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return {
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type: 'LOGIN'
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}
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};
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// Dispatch the action here:
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```
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# --solutions--
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```js
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const store = Redux.createStore(
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(state = {login: false}) => state
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);
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const loginAction = () => {
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return {
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type: 'LOGIN'
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}
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};
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store.dispatch(loginAction());
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```
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