90 lines
3.2 KiB
Markdown
90 lines
3.2 KiB
Markdown
---
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id: 5a24bbe0dba28a8d3cbd4c5d
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title: Create a Complex JSX Element
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challengeType: 6
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isRequired: false
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---
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## Description
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<section id='description'>
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The last challenge was a simple example of JSX, but JSX can represent more complex HTML as well.
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One important thing to know about nested JSX is that it must return a single element.
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This one parent element would wrap all of the other levels of nested elements.
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For instance, several JSX elements written as siblings with no parent wrapper element will not transpile.
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Here's an example:
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<b>Valid JSX:</b>
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<blockquote><div><br> <p>Paragraph One</p><br> <p>Paragraph Two</p><br> <p>Paragraph Three</p><br></div></blockquote>
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<b>Invalid JSX:</b>
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<blockquote><p>Paragraph One</p><br><p>Paragraph Two</p><br><p>Paragraph Three</p><br></blockquote>
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</section>
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## Instructions
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<section id='instructions'>
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Define a new constant <code>JSX</code> that renders a <code>div</code> which contains the following elements in order:
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An <code>h1</code>, a <code>p</code>, and an unordered list that contains three <code>li</code> items. You can include any text you want within each element.
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<strong>Note:</strong> When rendering multiple elements like this, you can wrap them all in parentheses, but it's not strictly required. Also notice this challenge uses a <code>div</code> tag to wrap all the child elements within a single parent element. If you remove the <code>div</code>, the JSX will no longer transpile. Keep this in mind, since it will also apply when you return JSX elements in React components.
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</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: The constant <code>JSX</code> should return a <code>div</code> element.
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testString: 'assert(JSX.type === "div", "The constant <code>JSX</code> should return a <code>div</code> element.");'
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- text: The <code>div</code> should contain a <code>p</code> tag as the second element.
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testString: 'assert(JSX.props.children[1].type === "p", "The <code>div</code> should contain a <code>p</code> tag as the second element.");'
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- text: The <code>div</code> should contain a <code>ul</code> tag as the third element.
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testString: 'assert(JSX.props.children[2].type === "ul", "The <code>div</code> should contain a <code>ul</code> tag as the third element.");'
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- text: The <code>div</code> should contain an <code>h1</code> tag as the first element.
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testString: 'assert(JSX.props.children[0].type === "h1", "The <code>div</code> should contain an <code>h1</code> tag as the first element.");'
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- text: The <code>ul</code> should contain three <code>li</code> elements.
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testString: 'assert(JSX.props.children[2].props.children.length === 3, "The <code>ul</code> should contain three <code>li</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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// write your code here
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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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const JSX = (
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<div>
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<h1>Hello JSX!</h1>
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<p>Some info</p>
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<ul>
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<li>An item</li>
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<li>Another item</li>
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<li>A third item</li>
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</ul>
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</div>);
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```
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</section>
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