96 lines
2.1 KiB
Markdown
96 lines
2.1 KiB
Markdown
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---
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id: 612e813b3ba67633222cbe54
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title: Part 6
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challengeType: 0
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dashedName: part-6
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---
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# --description--
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Remember that a `class` attribute can have multiple values. To separate your white keys from your black keys, you'll add a second `class` value of `black--key`. Add this to your second, third, fifth, sixth, and seventh `.key` elements.
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# --hints--
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Your second `.key` element should also have a `class` of `black--key`.
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```js
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const key = document.querySelectorAll('.key')?.[1];
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assert(key?.className?.includes('black--key'));
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```
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Your third `.key` should have `black--key` in the `class`.
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```js
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const third = document.querySelectorAll('.key')?.[2];
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assert(third?.classList?.contains('black--key'));
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```
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Your fifth `.key` should have `black--key` in the `class`.
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```js
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const fifth = document.querySelectorAll('.key')?.[4];
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assert(fifth?.classList?.contains('black--key'));
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```
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Your sixth `.key` should have `black--key` in the `class`.
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```js
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const sixth = document.querySelectorAll('.key')?.[5];
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assert(sixth?.classList?.contains('black--key'));
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```
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Your seventh `.key` should have `black--key` in the `class`.
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```js
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const seventh = document.querySelectorAll('.key')?.[6];
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assert(seventh?.classList?.contains('black--key'));
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```
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You should have five `.black--key` elements.
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```js
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const blackKeys = document.querySelectorAll('.black--key');
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assert(blackKeys?.length === 5);
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```
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You should have seven `.key` elements.
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```js
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const keys = document.querySelectorAll('.key');
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assert(keys?.length === 7);
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```
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# --seed--
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## --seed-contents--
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```html
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8" />
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<title>Responsive Web Design Piano</title>
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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</head>
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<body>
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--fcc-editable-region--
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<div id="piano">
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<div class="keys">
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<div class="key"></div>
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<div class="key"></div>
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<div class="key"></div>
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<div class="key"></div>
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<div class="key"></div>
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<div class="key"></div>
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<div class="key"></div>
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</div>
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</div>
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--fcc-editable-region--
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</body>
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</html>
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```
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```css
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```
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