f2df76c099
* fix: removed assert msg argument * fix: removed more assert msg args * fix: removed more assert msg args
74 lines
1.7 KiB
Markdown
74 lines
1.7 KiB
Markdown
---
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id: 5a24c314108439a4d4036160
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title: Define an HTML Class in JSX
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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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Now that you're getting comfortable writing JSX, you may be wondering how it differs from HTML.
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So far, it may seem that HTML and JSX are exactly the same.
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One key difference in JSX is that you can no longer use the word <code>class</code> to define HTML classes. This is because <code>class</code> is a reserved word in JavaScript. Instead, JSX uses <code>className</code>.
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In fact, the naming convention for all HTML attributes and event references in JSX become camelCase. For example, a click event in JSX is <code>onClick</code>, instead of <code>onclick</code>. Likewise, <code>onchange</code> becomes <code>onChange</code>. While this is a subtle difference, it is an important one to keep in mind moving forward.
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</section>
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## Instructions
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<section id='instructions'>
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Apply a class of <code>myDiv</code> to the <code>div</code> provided in the JSX code.
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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.strictEqual(JSX.type, 'div');
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- text: The <code>div</code> has a class of <code>myDiv</code>.
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testString: assert.strictEqual(JSX.props.className, 'myDiv');
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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 JSX = (
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<div>
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<h1>Add a class to this div</h1>
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</div>
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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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ReactDOM.render(JSX, document.getElementById('root'))
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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 className = 'myDiv'>
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<h1>Add a class to this div</h1>
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</div>);
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```
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</section>
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