182 lines
5.8 KiB
Markdown
182 lines
5.8 KiB
Markdown
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---
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id: 61fd990577d8227dd93fbeeb
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title: 步驟 24
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challengeType: 0
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dashedName: step-24
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---
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# --description--
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在第四個 `tr` 元素中，添加一個帶有文本 `Total Liabilities` 的 `th` 元素。 將文本 `Liabilities` 包裝在 `span` 元素中，並將 `class` 屬性設置爲 `sr-only`。
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之後，添加三個 `td` 元素以及以下文本（按順序）：`$750`、`$600`、`$475`。 給第三個 `td` 元素一個 `class` 屬性設置爲 `current`。
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# --hints--
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第四個 `tr` 應該有一個 `th` 元素。
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```js
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assert(document.querySelectorAll('table')?.[1]?.querySelector('tbody')?.querySelectorAll('tr')?.[3]?.querySelector('th'));
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```
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`th` 元素應包含文本 `Total Liabilities`。
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```js
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assert(document.querySelectorAll('table')?.[1]?.querySelector('tbody')?.querySelectorAll('tr')?.[3]?.querySelector('th')?.innerText === 'Total Liabilities');
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```
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應該將文本 `Liabilities` 包裝在 `span` 元素中。
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```js
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assert(document.querySelectorAll('table')?.[1]?.querySelector('tbody')?.querySelectorAll('tr')?.[3]?.querySelector('th > span')?.textContent === 'Liabilities');
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```
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`span` 元素應該將 `class` 屬性設置爲 `sr-only`。
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```js
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assert(document.querySelectorAll('table')?.[1]?.querySelector('tbody')?.querySelectorAll('tr')?.[3]?.querySelector('th > span')?.classList?.contains('sr-only'));
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```
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應該有三個 `td` 元素。
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```js
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assert(document.querySelectorAll('table')?.[1]?.querySelector('tbody')?.querySelectorAll('tr')?.[3]?.querySelectorAll('td').length === 3);
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```
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第一個 `td` 元素應該包含文本 `$750`。
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```js
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assert(document.querySelectorAll('table')?.[1]?.querySelector('tbody')?.querySelectorAll('tr')?.[3]?.querySelectorAll('td')?.[0]?.textContent === '$750');
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```
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第二個 `td` 元素應該包含文本 `$600`。
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```js
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assert(document.querySelectorAll('table')?.[1]?.querySelector('tbody')?.querySelectorAll('tr')?.[3]?.querySelectorAll('td')?.[1]?.textContent === '$600');
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```
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第三個 `td` 元素應該包含文本 `$475`。
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```js
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assert(document.querySelectorAll('table')?.[1]?.querySelector('tbody')?.querySelectorAll('tr')?.[3]?.querySelectorAll('td')?.[2]?.textContent === '$475');
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```
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第三個 `td` 元素應該將 `class` 設置爲 `current`。
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```js
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assert(document.querySelectorAll('table')?.[1]?.querySelector('tbody')?.querySelectorAll('tr')?.[3]?.querySelectorAll('td')?.[2]?.classList?.contains('current'));
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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 lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Balance Sheet</title>
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<link rel="stylesheet" href="./styles.css">
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</head>
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<body>
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<main>
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<section>
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<h1>
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<span class="flex">
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<span>AcmeWidgetCorp</span>
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<span>Balance Sheet</span>
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</span>
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</h1>
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<div id="years" aria-hidden="true">
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<span class="year">2019</span>
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<span class="year">2020</span>
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<span class="year">2021</span>
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</div>
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<div class="table-wrap">
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<table>
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<caption>Assets</caption>
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<thead>
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<tr>
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<td></td>
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<th><span class="sr-only year">2019</span></th>
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<th><span class="sr-only year">2020</span></th>
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<th class="current"><span class="sr-only year">2021</span></th>
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</tr>
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</thead>
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<tbody>
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<tr class="data">
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<th>Cash <span class="description">This is the cash we currently have on hand.</span></th>
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<td>$25</td>
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<td>$30</td>
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<td class="current">$28</td>
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</tr>
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<tr class="data">
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<th>Checking <span class="description">Our primary transactional account.</span></th>
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<td>$54</td>
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<td>$56</td>
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<td class="current">$53</td>
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</tr>
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<tr class="data">
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<th>Savings <span class="description">Funds set aside for emergencies.</span></th>
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<td>$500</td>
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<td>$650</td>
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<td class="current">$728</td>
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</tr>
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<tr class="total">
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<th>Total <span class="sr-only">Assets</span></th>
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<td>$579</td>
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<td>$736</td>
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<td class="current">$809</td>
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</tr>
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</tbody>
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</table>
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<table>
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<caption>Liabilities</caption>
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<thead>
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<tr>
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<td></td>
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<th><span class="sr-only">2019</span></th>
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<th><span class="sr-only">2020</span></th>
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<th><span class="sr-only">2021</span></th>
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</tr>
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</thead>
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<tbody>
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--fcc-editable-region--
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<tr class="data">
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<th>Loans <span class="description">The outstanding balance on our startup loan.</span></th>
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<td>$500</td>
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<td>$250</td>
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<td class="current">$0</td>
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</tr>
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<tr class="data">
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<th>Expenses <span class="description">Annual anticipated expenses, such as payroll.</span></th>
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<td>$200</td>
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<td>$300</td>
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<td class="current">$400</td>
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</tr>
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<tr class="data">
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<th>Credit <span class="description">The outstanding balance on our credit card.</span></th>
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<td>$50</td>
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<td>$50</td>
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<td class="current">$75</td>
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</tr>
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<tr class="total">
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</tr>
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--fcc-editable-region--
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</tbody>
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</table>
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<table>
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</table>
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</div>
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</section>
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</main>
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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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