90 lines
2.9 KiB
Markdown
90 lines
2.9 KiB
Markdown
---
|
|
id: 5a24bbe0dba28a8d3cbd4c5d
|
|
title: Create a Complex JSX Element
|
|
challengeType: 6
|
|
isRequired: false
|
|
---
|
|
|
|
## Description
|
|
<section id='description'>
|
|
The last challenge was a simple example of JSX, but JSX can represent more complex HTML as well.
|
|
One important thing to know about nested JSX is that it must return a single element.
|
|
This one parent element would wrap all of the other levels of nested elements.
|
|
For instance, several JSX elements written as siblings with no parent wrapper element will not transpile.
|
|
Here's an example:
|
|
<b>Valid JSX:</b>
|
|
<blockquote><div><br> <p>Paragraph One</p><br> <p>Paragraph Two</p><br> <p>Paragraph Three</p><br></div></blockquote>
|
|
<b>Invalid JSX:</b>
|
|
<blockquote><p>Paragraph One</p><br><p>Paragraph Two</p><br><p>Paragraph Three</p><br></blockquote>
|
|
</section>
|
|
|
|
## Instructions
|
|
<section id='instructions'>
|
|
Define a new constant <code>JSX</code> that renders a <code>div</code> which contains the following elements in order:
|
|
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.
|
|
<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.
|
|
</section>
|
|
|
|
## Tests
|
|
<section id='tests'>
|
|
|
|
```yml
|
|
tests:
|
|
- text: The constant <code>JSX</code> should return a <code>div</code> element.
|
|
testString: assert(JSX.type === 'div');
|
|
- text: The <code>div</code> should contain an <code>h1</code> tag as the first element.
|
|
testString: assert(JSX.props.children[0].type === 'h1');
|
|
- text: The <code>div</code> should contain a <code>p</code> tag as the second element.
|
|
testString: assert(JSX.props.children[1].type === 'p');
|
|
- text: The <code>div</code> should contain a <code>ul</code> tag as the third element.
|
|
testString: assert(JSX.props.children[2].type === 'ul');
|
|
- text: The <code>ul</code> should contain three <code>li</code> elements.
|
|
testString: assert(JSX.props.children.filter(ele => ele.type === 'ul')[0].props.children.filter(ele => ele.type === 'li').length === 3);
|
|
|
|
```
|
|
|
|
</section>
|
|
|
|
## Challenge Seed
|
|
<section id='challengeSeed'>
|
|
|
|
<div id='jsx-seed'>
|
|
|
|
```jsx
|
|
// write your code here
|
|
|
|
```
|
|
|
|
</div>
|
|
|
|
|
|
### After Test
|
|
<div id='jsx-teardown'>
|
|
|
|
```js
|
|
ReactDOM.render(JSX, document.getElementById('root'))
|
|
```
|
|
|
|
</div>
|
|
|
|
</section>
|
|
|
|
## Solution
|
|
<section id='solution'>
|
|
|
|
|
|
```js
|
|
const JSX = (
|
|
<div>
|
|
<h1>Hello JSX!</h1>
|
|
<p>Some info</p>
|
|
<ul>
|
|
<li>An item</li>
|
|
<li>Another item</li>
|
|
<li>A third item</li>
|
|
</ul>
|
|
</div>);
|
|
```
|
|
|
|
</section>
|