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>
86 lines
1.9 KiB
Markdown
86 lines
1.9 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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action creator 返回一个具有 type 属性的对象，该属性指定已发生的 action，然后，该方法将 action 对象 dispatch 到 Redux store，根据之前的挑战示例，以下内容是等效的，并且都 dispatch 类型为`LOGIN`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 具有初始化状态对象{login:'false'}，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，并传递`loginAction()`创建的 action。
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# --hints--
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调用函数`loginAction`应该返回一个对象{type:"LOGIN"}。
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```js
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assert(loginAction().type === 'LOGIN');
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```
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store 应该初始化一个对象 {login:false}。
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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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