61460c8601
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149 lines
4.0 KiB
Markdown
149 lines
4.0 KiB
Markdown
---
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id: 5a24c314108439a4d4036166
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title: Compose React Components
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challengeType: 6
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isRequired: false
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videoUrl: ''
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localeTitle: 撰写反应组件
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---
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## Description
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<section id="description">随着挑战继续使用更复杂的组合与React组件和JSX，有一点需要注意。在其他组件中渲染ES6样式类组件与渲染您在最后几个挑战中使用的简单组件没有什么不同。您可以在其他组件中呈现JSX元素，无状态功能组件和ES6类组件。 </section>
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## Instructions
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<section id="instructions">在代码编辑器中， <code>TypesOfFood</code>组件已经在呈现一个名为<code>Vegetables</code>的组件。此外，还有最后一项挑战中的<code>Fruits</code>成分。将两种成分<code>NonCitrus</code> <code>Fruits</code> - 首先是<code>NonCitrus</code> ，然后是<code>Citrus</code> 。这两个组件都是在后台为您提供的。接下来，将<code>Fruits</code>类组件嵌入到<code>TypesOfFood</code>组件中，位于<code>h1</code>标题下方和<code>Vegetables</code>上方。结果应该是一系列嵌套组件，它们使用两种不同的组件类型。 </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((function() { const mockedComponent = Enzyme.mount(React.createElement(TypesOfFood)); return mockedComponent.children().type() === 'div'; })());
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- text: <code>TypesOfFood</code>组件应返回<code>Fruits</code>组件。
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testString: assert((function() { const mockedComponent = Enzyme.mount(React.createElement(TypesOfFood)); return mockedComponent.children().childAt(1).name() === 'Fruits'; })());
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- text: <code>Fruits</code>组件应返回<code>NonCitrus</code>组件和<code>Citrus</code>组件。
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testString: assert((function() { const mockedComponent = Enzyme.mount(React.createElement(TypesOfFood)); return (mockedComponent.find('Fruits').children().find('NonCitrus').length === 1 && mockedComponent.find('Fruits').children().find('Citrus').length === 1); })());
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- text: <code>TypesOfFood</code>组件应返回<code>Fruits</code>组件下面的<code>Vegetables</code>组件。
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testString: assert((function() { const mockedComponent = Enzyme.mount(React.createElement(TypesOfFood)); return mockedComponent.children().childAt(2).name() === 'Vegetables'; })());
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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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class Fruits 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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<h2>Fruits:</h2>
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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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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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<Vegetables />
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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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### Before Test
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<div id='jsx-setup'>
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```jsx
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class NonCitrus extends React.Component {
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render() {
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return (
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<div>
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<h4>Non-Citrus:</h4>
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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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};
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class Citrus extends React.Component {
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render() {
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return (
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<div>
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<h4>Citrus:</h4>
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<ul>
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<li>Lemon</li>
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<li>Lime</li>
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<li>Orange</li>
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<li>Grapefruit</li>
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</ul>
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</div>
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);
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}
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};
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class Vegetables extends React.Component {
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render() {
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return (
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<div>
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<h2>Vegetables:</h2>
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<ul>
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<li>Brussel Sprouts</li>
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<li>Broccoli</li>
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<li>Squash</li>
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</ul>
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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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