freeCodeCamp/curriculum/challenges/chinese-traditional/14-responsive-web-design-22/learn-more-about-css-pseudo.../61fd9b7285bde783ad5b8aac.md

6.7 KiB

id title challengeType dashedName
61fd9b7285bde783ad5b8aac 步驟 27 0 step-27

--description--

tbody 中,添加一個 tr,並將 class 設置爲 total。 在其中,添加帶有文本 Total Net Worthth,並將 Net Worth 包裝在 span 中,以及將 class 設置爲 sr-only

然後添加三個 td 元素,將第三個 class 設置爲 current,併爲每個元素提供以下文本:$-171$136$334

--hints--

tbody 元素應該有一個 tr 元素。

assert(document.querySelectorAll('table')?.[2]?.querySelector('tbody')?.querySelectorAll('tr')?.length === 1);

tr 元素應該將 class 設置爲 total

assert(document.querySelectorAll('table')?.[2]?.querySelector('tbody')?.querySelector('tr')?.classList?.contains('total'));

tr 應該有一個 th 元素。

assert(document.querySelectorAll('table')?.[2]?.querySelector('tbody')?.querySelectorAll('tr')?.[0]?.querySelector('th'));

th 元素應包含文本 Total Net Worth

assert(document.querySelectorAll('table')?.[2]?.querySelector('tbody')?.querySelectorAll('tr')?.[0]?.querySelector('th')?.innerText === 'Total Net Worth');

應該將文本 Net Worth 包裝在 span 元素中。

assert(document.querySelectorAll('table')?.[2]?.querySelector('tbody')?.querySelectorAll('tr')?.[0]?.querySelector('th > span')?.textContent === 'Net Worth');

span 元素應該將 class 屬性設置爲 sr-only

assert(document.querySelectorAll('table')?.[2]?.querySelector('tbody')?.querySelectorAll('tr')?.[0]?.querySelector('th > span')?.classList?.contains('sr-only'));

應該有三個 td 元素。

assert(document.querySelectorAll('table')?.[2]?.querySelector('tbody')?.querySelectorAll('tr')?.[0]?.querySelectorAll('td').length === 3);

第一個 td 元素應該包含文本 $-171

assert(document.querySelectorAll('table')?.[2]?.querySelector('tbody')?.querySelectorAll('tr')?.[0]?.querySelectorAll('td')?.[0]?.textContent === '$-171');

第二個 td 元素應該包含文本 $136

assert(document.querySelectorAll('table')?.[2]?.querySelector('tbody')?.querySelectorAll('tr')?.[0]?.querySelectorAll('td')?.[1]?.textContent === '$136');

第三個 td 元素應該包含文本 $334

assert(document.querySelectorAll('table')?.[2]?.querySelector('tbody')?.querySelectorAll('tr')?.[0]?.querySelectorAll('td')?.[2]?.textContent === '$334');

第三個 td 元素應該將 class 設置爲 current

assert(document.querySelectorAll('table')?.[2]?.querySelector('tbody')?.querySelectorAll('tr')?.[0]?.querySelectorAll('td')?.[2]?.classList?.contains('current'));

--seed--

--seed-contents--

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Balance Sheet</title>
    <link rel="stylesheet" href="./styles.css">
  </head>
  <body>
    <main>
      <section>
        <h1>
          <span class="flex">
            <span>AcmeWidgetCorp</span>
            <span>Balance Sheet</span>
          </span>
        </h1>
        <div id="years" aria-hidden="true">
          <span class="year">2019</span>
          <span class="year">2020</span>
          <span class="year">2021</span>
        </div>
        <div class="table-wrap">
          <table>
            <caption>Assets</caption>
            <thead>
              <tr>
                <td></td>
                <th><span class="sr-only year">2019</span></th>
                <th><span class="sr-only year">2020</span></th>
                <th class="current"><span class="sr-only year">2021</span></th>
              </tr>
            </thead>
            <tbody>
              <tr class="data">
                <th>Cash <span class="description">This is the cash we currently have on hand.</span></th>
                <td>$25</td>
                <td>$30</td>
                <td class="current">$28</td>
              </tr>
              <tr class="data">
                <th>Checking <span class="description">Our primary transactional account.</span></th>
                <td>$54</td>
                <td>$56</td>
                <td class="current">$53</td>
              </tr>
              <tr class="data">
                <th>Savings <span class="description">Funds set aside for emergencies.</span></th>
                <td>$500</td>
                <td>$650</td>
                <td class="current">$728</td>
              </tr>
              <tr class="total">
                <th>Total <span class="sr-only">Assets</span></th>
                <td>$579</td>
                <td>$736</td>
                <td class="current">$809</td>
              </tr>
            </tbody>
          </table>
          <table>
            <caption>Liabilities</caption>
            <thead>
              <tr>
              <td></td>
              <th><span class="sr-only">2019</span></th>
              <th><span class="sr-only">2020</span></th>
              <th><span class="sr-only">2021</span></th>
              </tr>
            </thead>
            <tbody>
              <tr class="data">
                <th>Loans <span class="description">The outstanding balance on our startup loan.</span></th>
                <td>$500</td>
                <td>$250</td>
                <td class="current">$0</td>
              </tr>
              <tr class="data">
                <th>Expenses <span class="description">Annual anticipated expenses, such as payroll.</span></th>
                <td>$200</td>
                <td>$300</td>
                <td class="current">$400</td>
              </tr>
              <tr class="data">
                <th>Credit <span class="description">The outstanding balance on our credit card.</span></th>
                <td>$50</td>
                <td>$50</td>
                <td class="current">$75</td>
              </tr>
              <tr class="total">
                <th>Total <span class="sr-only">Liabilities</span></th>
                <td>$750</td>
                <td>$600</td>
                <td class="current">$475</td>
              </tr>
            </tbody>
          </table>
--fcc-editable-region--
          <table>
            <caption>Net Worth</caption>
            <thead>
              <tr>
              <td></td>
              <th><span class="sr-only">2019</span></th>
              <th><span class="sr-only">2020</span></th>
              <th><span class="sr-only">2021</span></th>
              </tr>
            </thead>
            <tbody>
            </tbody>
          </table>
--fcc-editable-region--
        </div>
      </section>
    </main>
  </body>
</html>