Javascript

Question

所以我设置了 3 个选项卡，几乎完全像这样 - https://www.w3schools.com/howto/howto_js_tabs.asp - 但每个选项卡下的内容是不同的视频 (HTML)。我的问题是，在更改选项卡后，前一个选项卡中的 video/audio 继续播放 - 除非我在切换选项卡之前暂停视频。对于与此类似的问题，我已经尝试了一些我见过的不同解决方案，但仍然找不到适合我页面的解决方案。

这是 HTML 我有 -

<!-- Tab links -->
<div class="tab">
<button class="tablinks" onclick="openCity(event, 'BEE')" id="defaultOpen">BEE</button>
<button class="tablinks" onclick="openCity(event, 'CRAB')">CRAB</button>
<button class="tablinks" onclick="openCity(event, 'CROW')">CROW</button>
</div>

<!-- Tab content -->
<div id="BEE" class="tabcontent">
 <div class="video">
  <video width="852" height="480" controls>
    <source src="bee.mov" type="video/mp4">
  </video> 
</div>
</div>

<div id="CRAB" class="tabcontent">
 <div class="video">
  <video width="852" height="480" controls>
    <source src="crab.mov" type="video/mp4">
  </video> 
 </div>
</div>

<div id="CROW" class="tabcontent">
 <div class="video">
  <video width="852" height="480" controls>
    <source src="crow.mov" type="video/mp4">
  </video> 
 </div>
</div>

以下是我尝试过的一些不同的解决方案 - #1 - 我经常回来的主要内容 - Pause/stop videos into tabs when I clicked on a tab #2 - How to pause a video when another video's play button is clicked #3 - 我试过看看是否有办法可以将 space 栏切换为单击该栏上的任意位置 - https://teamtreehouse.com/community/hi-how-can-i-make-the-video-startstop-by-clicking-anywhere-on-the-video-icon-instead-of-targeting-the-play-button

我对 JS 还是很陌生，所以非常感谢任何帮助或建议！谢谢！

Answer 1

您可以在单击其中一个选项卡时暂停所有视频：

function openCity(evt, cityName) {
  var i, tabcontent, tablinks;
  tabcontent = document.getElementsByClassName("tabcontent");
  for (i = 0; i < tabcontent.length; i++) {
    tabcontent[i].style.display = "none";
    tabcontent[i].querySelector("video").pause();
  }
  tablinks = document.getElementsByClassName("tablinks");
  for (i = 0; i < tablinks.length; i++) {
    tablinks[i].className = tablinks[i].className.replace(" active", "");
  }
  document.getElementById(cityName).style.display = "block";
  evt.currentTarget.className += " active";
}

body {
  font-family: Arial;
}


/* Style the tab */

.tab {
  overflow: hidden;
  border: 1px solid #ccc;
  background-color: #f1f1f1;
}


/* Style the buttons inside the tab */

.tab button {
  background-color: inherit;
  float: left;
  border: none;
  outline: none;
  cursor: pointer;
  padding: 14px 16px;
  transition: 0.3s;
  font-size: 17px;
}


/* Change background color of buttons on hover */

.tab button:hover {
  background-color: #ddd;
}


/* Create an active/current tablink class */

.tab button.active {
  background-color: #ccc;
}


/* Style the tab content */

.tabcontent {
  display: none;
  padding: 6px 12px;
  border: 1px solid #ccc;
  border-top: none;
}

.tabcontent .video {
  width: 100%;
}

<h2>Tabs</h2>
<p>Click on the buttons inside the tabbed menu:</p>

<div class="tab">
  <button class="tablinks" onclick="openCity(event, 'London')">London</button>
  <button class="tablinks" onclick="openCity(event, 'Paris')">Paris</button>
  <button class="tablinks" onclick="openCity(event, 'Tokyo')">Tokyo</button>
</div>

<div id="London" class="tabcontent">
  <h3>London</h3>
  <p>London is the capital city of England.</p>
  <video controls>
    <source src="https://www.learningcontainer.com/wp-content/uploads/2020/05/sample-mp4-file.mp4" type="video/mp4"/>
  </video>
</div>

<div id="Paris" class="tabcontent">
  <h3>Paris</h3>
  <p>Paris is the capital of France.</p>
  <video controls>
    <source src="https://www.learningcontainer.com/wp-content/uploads/2020/05/sample-mp4-file.mp4" type="video/mp4"/>
  </video>
</div>

<div id="Tokyo" class="tabcontent">
  <h3>Tokyo</h3>
  <p>Tokyo is the capital of Japan.</p>
  <video controls>
    <source src="https://www.learningcontainer.com/wp-content/uploads/2020/05/sample-mp4-file.mp4" type="video/mp4"/>
  </video>
</div>

Javascript - 切换到另一个选项卡时暂停视频（在同一页面上）

Javascript - Pause video when changing to another tab (on the same page)

html

css

video