如何使用jQuery和HTML5检测音频文件的结尾 [英] how to detect end of audio file using jquery and html5

问题描述

我有这个jQuery code和HTML工作确定一个英语培训网站。

I've got this jquery code and html to work OK for an English language training site.

$(document).ready(function() {
  $("p").hover(
    function() {
      $(this).css({"color": "purple", "font-weight" : "bolder"});
    },
    function() {
      $(this).css({"color": "black", "font-weight" : ""});
    }
  ); 
  $("p").click(function (event) {
    var element = $(this);
    var elementID = event.target.id;
    var oggVar = (elementID +".ogg");   
    var audioElement = document.createElement('audio');
    audioElement.setAttribute('src', oggVar); 
    audioElement.load();
    audioElement.addEventListener("load", function() { 
        audioElement.play(); 
    }, true);
    audioElement.play();    
  }); 
});

<div>
  <p id="one"> this is the first paragraph</p>
....   
  <p id="four"> this is the fourth paragraph</p> 
....   
</div>

的问题是，如果被点击文本而音频文件正在播放（或双点击）然后在第二文件（或相同的文件）开始播放。所以，我结束了两个文件同时播放。我需要prevent这一点。我认为，结束事件是相关的，但是，尽管看起来一些例子，我看不到相当如何检测，如果一个文件播放，并等待，直到它完成允许第二个文件，以启动（或甚至prevent前它打的话）。任何帮助将是非常美联社preciated :)

the problem is that if text is clicked on while an audio file is playing (or double clicked) then the second file (or the same file) starts playing. So I end up with two files playing simultaneously. I need to prevent this. I think that the 'ended' event is relevant but, despite looking some examples, I can't see quite how to detect if a file is playing and wait until it's finished before allowing a second file to start (or even prevent it from playing at all). Any help would be much appreciated :)

推荐答案

您可以添加事件侦听器的的结束，打事件。另外，为什么创造通过JavaScript一个音频标签？我只想创建一个空的隐藏式音响标签：

You can add event listeners for the ended and playing events. Also, why creating a audio tag via javascript? I would just create an empty hidden audio tag:

<audio id='myAudio' autoplay='autoplay'></audio>

您有两种选择：

• 禁用/启用时，音频播放/停止按钮/链接（preferred恕我直言）


• 忽略点击时已经弹奏

那么双事件监听器添加到它：

Then add two eventlisteners to it:

var playing = false;

$('#myAudio').on('playing', function() {
   playing = true;
   // disable button/link
});
$('#myAudio').on('ended', function() {
   playing = false;
   // enable button/link
});

$("p").click(function (event) {
   if(!playing) {
      var element = $(this);
      var elementID = event.target.id;
      var oggVar = (elementID +".ogg");   
      var audioElement = $('#myAudio')[0];
      audioElement.setAttribute('src', oggVar); 
      audioElement.play();
   }

});

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