js控制声音（浏览器兼容问题），在线等~~~

webphoenix
等级:

发表于：2008-05-08 00:56:0512楼得分:0

你看看 scriptaculous 效果库里的sound.js文件，基于Prototype，代码如下：

JScript code


Sound = {
  tracks: {},
  _enabled: true,
  template:
    new Template('<embed style="height:0" id="sound_#{track}_#{id}" src="#{url}" loop="false" autostart="true" hidden="true"/>'),
  enable: function(){
    Sound._enabled = true;
  },
  disable: function(){
    Sound._enabled = false;
  },
  play: function(url){
    if(!Sound._enabled) return;
    var options = Object.extend({
      track: 'global', url: url, replace: false
    }, arguments[1] || {});
    
    if(options.replace && this.tracks[options.track]) {
      $R(0, this.tracks[options.track].id).each(function(id){
        var sound = $('sound_'+options.track+'_'+id);
        sound.Stop && sound.Stop();
        sound.remove();
      })
      this.tracks[options.track] = null;
    }
      
    if(!this.tracks[options.track])
      this.tracks[options.track] = { id: 0 }
    else
      this.tracks[options.track].id++;
      
    options.id = this.tracks[options.track].id;
    $$('body')[0].insert( 
      Prototype.Browser.IE ? new Element('bgsound',{
        id: 'sound_'+options.track+'_'+options.id,
        src: options.url, loop: 1, autostart: true
      }) : Sound.template.evaluate(options));
  }
};

if(Prototype.Browser.Gecko && navigator.userAgent.indexOf("Win") > 0){
  if(navigator.plugins && $A(navigator.plugins).detect(function(p){ return p.name.indexOf('QuickTime') != -1 }))
    Sound.template = new Template('<object id="sound_#{track}_#{id}" width="0" height="0" type="audio/mpeg" data="#{url}"/>')
  else
    Sound.play = function(){}
}

例子如下：

HTML code


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
  <title>script.aculo.us Sound functional test file</title>
  <meta http-equiv="content-type" content="text/html; charset=utf-8" />
  <script src="../../lib/prototype.js" type="text/javascript"></script>
  <script src="../../src/scriptaculous.js" type="text/javascript"></script>
</head>
<body>
<h1>script.aculo.us Sound test file</h1>

<a href="#" onclick="Sound.play('sword.mp3'); return false">play sound (parallel)</a>

<a href="#" onclick="Sound.play('sword.mp3',{replace:true}); return false">play sound (overwrite)</a>

<a href="#" onclick="Sound.disable(); return false">Mute</a>
<a href="#" onclick="Sound.enable(); return false">Enable sounds</a>

</body>
</html>

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