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freeCodeCamp/curriculum/challenges/chinese/03-front-end-libraries/redux/write-a-counter-with-redux.chinese.md
Kristofer Koishigawa b3213fc892 fix(i18n): chinese test suite (#38220)
* fix: Chinese test suite

Add localeTiltes, descriptions, and adjust test text and testStrings to get the automated test suite working.

* fix: ran script, updated testStrings and solutions
2020-03-03 18:49:47 +05:30

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id, title, challengeType, isRequired, videoUrl, localeTitle
id title challengeType isRequired videoUrl localeTitle
5a24c314108439a4d4036157 Write a Counter with Redux 6 false 用Redux写一个计数器

Description

现在您已经了解了Redux的所有核心原则您已经了解了如何创建操作和操作创建器创建Redux存储针对存储分派操作以及使用纯reducer设计状态更新。您甚至已经了解了如何使用reducer组合管理复杂状态并处理异步操作。这些示例过于简单但这些概念是Redux的核心原则。如果您理解它们那么您已准备好开始构建自己的Redux应用程序。接下来的挑战涵盖了有关state不变性的一些细节,但首先,这里是对迄今为止所学到的所有内容的回顾。

Instructions

在本课程中您将从头开始使用Redux实现一个简单的计数器。代码编辑器中提供了基础知识但您必须填写详细信息使用提供的名称并定义incActiondecAction操作创建者, decAction counterReducer() INCREMENTDECREMENT操作类型最后定义Redux store 。一旦完成,您应该能够发送INCREMENTDECREMENT操作来增加或减少store保存的状态。祝你好运第一个Redux应用程序

Tests

tests:
  - text: 动作创建者<code>incAction</code>应返回<code>type</code>等于<code>INCREMENT</code>值的动作对象
    testString: assert(incAction().type ===INCREMENT);
  - text: 动作创建者<code>decAction</code>应与返回动作对象<code>type</code>等于的值<code>DECREMENT</code>
    testString: assert(decAction().type === DECREMENT);
  - text: Redux存储应该以0 <code>state</code>初始化。
    testString: assert(store.getState() === 0);
  - text: 在Redux存储上调度<code>incAction</code>应该将<code>state</code>增加1。
    testString: assert((function() { const initialState = store.getState(); store.dispatch(incAction()); const incState = store.getState(); return initialState + 1 === incState })());
  - text: 在Redux存储上调度<code>decAction</code>应该将<code>state</code>减1。
    testString: assert((function() { const initialState = store.getState(); store.dispatch(decAction()); const decState = store.getState(); return initialState - 1 === decState })());
  - text: <code>counterReducer</code>应该是一个函数
    testString: assert(typeof counterReducer === 'function');

Challenge Seed

const INCREMENT = null; // define a constant for increment action types
const DECREMENT = null; // define a constant for decrement action types

const counterReducer = null; // define the counter reducer which will increment or decrement the state based on the action it receives

const incAction = null; // define an action creator for incrementing

const decAction = null; // define an action creator for decrementing

const store = null; // define the Redux store here, passing in your reducers

Solution

// solution required