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freeCodeCamp/curriculum/challenges/chinese/01-responsive-web-design/applied-accessibility/standardize-times-with-the-html5-datetime-attribute.md
2022-01-11 08:57:22 -08:00

4.1 KiB

id, title, challengeType, videoUrl, forumTopicId, dashedName
id title challengeType videoUrl forumTopicId dashedName
587d778c367417b2b2512aa9 使用 HTML5 的 datetime 属性标准化时间 0 https://scrimba.com/c/cmzMgtz 301025 standardize-times-with-the-html5-datetime-attribute

--description--

继续日期主题。 HTML5 还引入了 time 标签与 datetime 属性来标准化时间。 time 元素是一个行内元素,用于在一个页面上显示日期或时间。 datetime 属性包含的有效格式。 辅助设备可以获取这个值。 这个属性也有助于避免混乱,因为它规定了时间的标准化版本,甚至可以在文本中以非正式的方式或学术方式使用它。

举个例子:

<p>Master Camper Cat officiated the cage match between Goro and Scorpion <time datetime="2013-02-13">last Wednesday</time>, which ended in a draw.</p>

--instructions--

Camper Cat 格斗的调查结果出来了! 用 time 标签包裹文本 Thursday, September 15<sup>th</sup>,添加一个 datetime 属性,将属性值设置为 2016-09-15

--hints--

应存在一个 time 元素和一个内容文本为 Thank you to everyone for responding to Master Camper Cat's survey.p 元素。

assert(timeElement);

time 元素的内容文本应为 Thursday, September 15<sup>th</sup>

assert(
  timeElement &&
    timeElement?.innerHTML?.trim() === 'Thursday, September 15<sup>th</sup>'
);

time 元素应包含非空的 datetime 属性。

assert(datetimeAttr && datetimeAttr?.length);

datetime 的属性值应为 2016-09-15

assert(datetimeAttr === '2016-09-15');

--seed--

--after-user-code--

<script>
const pElement = [...document.querySelectorAll("article > p")]
  .filter(x => x?.textContent?.includes("Thank you to everyone for responding to Master Camper Cat's survey."));
const timeElement = pElement[0] ? pElement[0].querySelector("time") : null;
const datetimeAttr = timeElement?.getAttribute("datetime");
</script>

--seed-contents--

<body>
  <header>
    <h1>Tournaments</h1>
  </header>
  <article>
    <h2>Mortal Kombat Tournament Survey Results</h2>

    <!-- Only change code below this line -->

    <p>Thank you to everyone for responding to Master Camper Cat's survey. The best day to host the vaunted Mortal Kombat tournament is Thursday, September 15<sup>th</sup>. May the best ninja win!</p>

    <!-- Only change code above this line -->

    <section>
      <h3>Comments:</h3>
      <article>
        <p>Posted by: Sub-Zero on <time datetime="2016-08-13T20:01Z">August 13<sup>th</sup></time></p>
        <p>Johnny Cage better be there, I'll finish him!</p>
      </article>
      <article>
        <p>Posted by: Doge on <time datetime="2016-08-15T08:12Z">August 15<sup>th</sup></time></p>
        <p>Wow, much combat, so mortal.</p>
      </article>
      <article>
        <p>Posted by: The Grim Reaper on <time datetime="2016-08-16T00:00Z">August 16<sup>th</sup></time></p>
        <p>Looks like I'll be busy that day.</p>
      </article>
    </section>
  </article>
  <footer>&copy; 2018 Camper Cat</footer>
</body>

--solutions--

<body>
  <header>
    <h1>Tournaments</h1>
  </header>
  <article>
    <h2>Mortal Kombat Tournament Survey Results</h2>

    <p>Thank you to everyone for responding to Master Camper Cat's survey. The best day to host the vaunted Mortal Kombat tournament is <time datetime="2016-09-15">Thursday, September 15<sup>th</sup></time>. May the best ninja win!</p>

    <section>
      <h3>Comments:</h3>
      <article>
        <p>Posted by: Sub-Zero on <time datetime="2016-08-13T20:01Z">August 13<sup>th</sup></time></p>
        <p>Johnny Cage better be there, I'll finish him!</p>
      </article>
      <article>
        <p>Posted by: Doge on <time datetime="2016-08-15T08:12Z">August 15<sup>th</sup></time></p>
        <p>Wow, much combat, so mortal.</p>
      </article>
      <article>
        <p>Posted by: The Grim Reaper on <time datetime="2016-08-16T00:00Z">August 16<sup>th</sup></time></p>
        <p>Looks like I'll be busy that day.</p>
      </article>
    </section>
  </article>
  <footer>&copy; 2018 Camper Cat</footer>
</body>