HTML | DOM 音频对象

Audio 对象用于表示HTML 元素。
音频对象是HTML5 中的一个新对象。

句法：

• 创建
• 访问

属性值：

Value	Description
audioTracks	It is used for returning an AudioTrackList object representing available audio tracks.
autoplay	It is used for setting or returning whether the audio should start playing as soon as it is ready.
buffered	It is used for returning a TimeRanges object representing the buffered parts of an audio.
controller	It is used for returning the MediaController object representing the current media controller of an audio.
controls	It is used for setting or returning whether an audio should have controls displayed (play/pause etc).
crossOrigin	It is used for setting or returning the CORS settings of an audio.
currentSrc	It is used for returning the URL of the current audio.
currentTime	It is used for setting or returning the current playback position in an audio (in seconds).
defaultMuted	It is used for setting or returning whether the audio should be muted by default.
defaultPlaybackRate	It is used for setting or returning whether the search field is read-only, or not.
duration	It is used for returning the length of an audio(in seconds).
ended	It is used for returning whether the playback of the audio has ended.
error	It is used for returning a MediaError object representing the error state of the audio.
loop	It is used for setting or returning whether the audio should start playing over again, every time it is finished.
mediaGroup	It is used for setting or returning the name of the media group the audio(s) is a part of.
muted	It is used for setting or returning whether the sound should be turned off.
networkState	It is used for returning the current network state of an audio.
paused	It is used for setting or returning whether an audio is paused.
playbackRate	It is used for setting or returning the speed of the audio playback.
played	It is used for returning a TimeRanges object representing the played parts of the audio.
preload	It is used for setting or returning the value of the preload attribute of an audio.
readyState	It is used for setting or returning the current ready state of an audio.
seekable	It is used for returning a TimeRanges object representing the seekable parts of an audio.
seeking	It is used for returning whether the user is currently seeking in the audio.
src	It is used for setting or returning the value of the src attribute of an audio.
textTracks	It is used for returning a TextTrackList object representing the available text tracks.
volume	It is used for setting or returning the audio volume of an audio.

音频对象方法：

Value	Description
addTextTrack()	It is used for adding a new text track to the audio.
canPlayType()	It is used for checking whether the browser can play the specified audio type.
fastSeek()	It is used for seeking to a specified time in the audio player.
getStartDate()	It is used for returning a new Date object, representing the current timeline offset.
load()	It is used for re-loading the audio element.
play()	It is used for start playing the audio.
pause()	It is used for pausing the currently playing audio.

下面的程序说明了音频对象：
示例 1：创建

  

    Audio Object
    
        h1 {
            color: green;
        }
          
        h2 {
            font-family: Impact;
        }
          
        body {
            text-align: center;
        }
    

  

  
    GeeksforGeeks
    Audio Object
  
    Double Click the "Create" 
      button to create an Audio Object.
  
    
      Create
  
  
    
        function Create() {
            
            // Create audio element.
            var m = document.createElement(
              "AUDIO");
  
            if (m.canPlayType("audio/mpeg")) {
                m.setAttribute("src", "bells.mp3");
            } else {
                m.setAttribute("src", "bells.ogg");
            }
  
            m.setAttribute("controls", "controls");
            document.body.appendChild(m);
        }
    
  

  

输出：

• 点击按钮前：
  
• 点击按钮后：
  

示例 2：访问

  

    Audio Object
    
        h1 {
            color: green;
        }
          
        h2 {
            font-family: Impact;
        }
          
        body {
            text-align: center;
        }
    

  

  
    GeeksforGeeks
    Audio Object
  
    
        
        
      Your browser does not support the audio element.
    
  
    Double-click the "Access Audio" button 
      to get the duration of the audio, in seconds.
  
     Access Audio
  
    
  
    
        function access() {
            
            // Accessing audio element duration.
            var m = document.getElementById(
              "track").duration;
            document.getElementById("test").innerHTML = m;
        }
    
  

  

输出：

• 点击按钮前：
  
• 点击按钮后：
  

支持的浏览器： HTML支持的浏览器 |下面列出了DOM 音频对象：

• 谷歌浏览器
• IE浏览器
• 火狐
• 歌剧
• 苹果Safari