104 lines
3.3 KiB
Markdown
104 lines
3.3 KiB
Markdown
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---
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id: 5a24c314108439a4d4036165
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title: Use React to Render Nested Components
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challengeType: 6
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isRequired: false
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videoUrl: ''
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localeTitle: 使用React渲染嵌套组件
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---
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## Description
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<section id="description">最后一个挑战显示了组合两个组件的简单方法，但是有许多不同的方法可以使用React组合组件。组件组合是React强大的功能之一。当您使用React时，重要的是开始根据组件（如上一个挑战中的App示例）考虑您的用户界面。您将UI分解为其基本构建块，这些块成为组件。这有助于将负责UI的代码与负责处理应用程序逻辑的代码分开。它可以大大简化复杂项目的开发和维护。 </section>
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## Instructions
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<section id="instructions">代码编辑器中定义了两个功能组件，名为<code>TypesOfFruit</code>和<code>Fruits</code> 。取<code>TypesOfFruit</code>组分和构成它，或者它<em>窝</em> ，所述内<code>Fruits</code>组分。然后使用<code>Fruits</code>组件并将其嵌套在<code>TypesOfFood</code>组件中。结果应该是一个嵌套在父组件中的子组件，它嵌套在它自己的父组件中！ </section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: <code>TypesOfFood</code>组件应返回单个<code>div</code>元素。
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testString: 'assert(Enzyme.shallow(React.createElement(TypesOfFood)).type() === "div", "The <code>TypesOfFood</code> component should return a single <code>div</code> element.");'
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- text: <code>TypesOfFood</code>组件应返回<code>Fruits</code>组件。
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testString: 'assert(Enzyme.shallow(React.createElement(TypesOfFood)).props().children[1].type.name === "Fruits", "The <code>TypesOfFood</code> component should return the <code>Fruits</code> component.");'
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- text: <code>Fruits</code>组件应返回<code>TypesOfFruit</code>组件。
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testString: 'assert(Enzyme.mount(React.createElement(TypesOfFood)).find("h2").html() === "<h2>Fruits:</h2>", "The <code>Fruits</code> component should return the <code>TypesOfFruit</code> component.");'
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- text: <code>TypesOfFruit</code>组件应返回<code>h2</code>和<code>ul</code>元素。
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testString: 'assert(Enzyme.mount(React.createElement(TypesOfFood)).find("ul").text() === "ApplesBlueberriesStrawberriesBananas", "The <code>TypesOfFruit</code> component should return the <code>h2</code> and <code>ul</code> elements.");'
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='jsx-seed'>
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```jsx
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const TypesOfFruit = () => {
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return (
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<div>
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<h2>Fruits:</h2>
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<ul>
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<li>Apples</li>
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<li>Blueberries</li>
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<li>Strawberries</li>
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<li>Bananas</li>
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</ul>
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</div>
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);
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};
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const Fruits = () => {
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return (
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<div>
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{ /* change code below this line */ }
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{ /* change code above this line */ }
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</div>
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);
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};
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class TypesOfFood extends React.Component {
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constructor(props) {
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super(props);
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}
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render() {
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return (
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<div>
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<h1>Types of Food:</h1>
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{ /* change code below this line */ }
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{ /* change code above this line */ }
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</div>
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);
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}
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};
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```
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</div>
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### After Test
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<div id='jsx-teardown'>
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```js
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console.info('after the test');
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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