HTML DOM Track srclang 属性

htmlweb developmentfront end technology更新于 2024/5/26 7:08:17

HTML DOM Track 的 srclang 属性设置/返回与文本轨道语言对应的值。

以下是语法 −

返回字符串值

trackObject.srclang

将 srclang 设置为 stringValue

trackObject.srclang = stringValue

让我们看一个 Track srclang 属性的示例 −

示例

<!DOCTYPE html>
<html>
<head>
<title>Track srclang</title>
<style>
   form {
      width:70%;
      margin: 0 auto;
      text-align: center;
   }
   * {
      padding: 2px;
      margin:5px;
   }
   input[type="button"] {
      border-radius: 10px;
   }
</style>
</head>
<body>
   <form>
      <fieldset>
         <legend>Track-srclang</legend>
         <video id="videoSelect" controls width="250" src="sample.mp4">
         <track default kind="subtitles" srclang="es" src="sample-es.srt" label="Spanish" />
         <track kind="subtitles" srclang="en" src="sample-en.srt" label="English" />
         </video><br>
         <input type="button" onclick="getTrackDetails()" value="What is the language of default    track?">
         <div id="divDisplay"></div>
      </fieldset>
   </form>
<script>
   var divDisplay = document.getElementById("divDisplay");
   var trackSelect = document.getElementsByTagName("track");
   function getTrackDetails() {
      for(var i=0; i<trackSelect.length; i++)
         if(trackSelect[i].default && trackSelect[i].srclang === 'es')
            divDisplay.textContent = 'Language of default track: '+trackSelect[i].label;
   }
</script>
</body>
</html>