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开发小菜:
支持IE9以下的吗?
HTML5+CSS3+JQuery打造自定义视频播放器 -
攻城使:
开发Html5必须得下载么,我用dw编写,把文件复制到myec ...
html5开发 myeclipse安装aptana插件 -
疾风鹰狼:
...
根据判断浏览器类型屏幕分辨率自动调用不同CSS的代码 -
sardodo:
你好,我想问下,导入例子中的.dae格式模型是可以看到旋转的小 ...
c3dl 初步认识 -
BIOHAZARDX:
下载学习,初学者膜拜一下。
html5 实现动画(三)
One of the neatest things about HTML5 is support for the new <audio> tag. Like <video> it allows you to natively support media in good browsers like Chrome, FireFox, Opera and Safari. Add a touch of JavaScript and a new era of media applications become possible. Synthesizers, music trackers and games require seamless audio loops though so we need something a bit simpler for our first foray into HTML5 audio. Oooh, how about a retro beatbox with individual track adjustments (start/stop/loop/volume) that could be used to build a unique soundscape from many separate instruments. Perfect! Fantasy can only become reality through hard work so let’s get started with some tests first. Uses the ‘loop’ property. Uses a JavaScript function to loop when an ‘ended’ event is called. Uses two JavaScript functions and two audio elements with the same source to alternate playback duties. Tests were done on Windows 7 with Chrome 5.0.342.9 beta, FireFox 3.6.3, Internet Explorer 9.0 Preview, Opera 10.51 and Safari 4.0.5. Chrome seems to trigger loops before the current sound is completely finished leading to some odd jumpiness. All loop methods are affected. FireFox doesn’t seem to like the ‘loop’ property of method 1, odd. Method 2 has the slightest of delays between loops and method 3 was actually perfect! I didn’t believe it until verification at the millisecond level with Audacity. Hooray Mozilla! Internet Explorer 9 doesn’t support the audio tag yet. Hopefully it will before an official release. Opera performs almost as well as FireFox although there is still a small delay even when using method 3. Safari seems slow to start playback which is very easy to detect once you hear a loop. All loop methods affected. Feedback on other browsers/OS compatibility would be very interesting so please feel free to discuss any findings in the comments below. As of right now (April 11, 2010) only FireFox can do a perfect loop by cheating a bit and using two <audio> elements with JavaScript. So yeah, it’s a bit too early for HTML5 audio loops but don’t let that stop you from creating sound boards, media players and other fun things. Hopefully with some more optimizations audio support will continue to improve and a HTML5 beatbox fantasy can become reality. Until then there are plenty of other fun things to play with. Cheers!Loop Method 1
<audio id="audio_1" controls preload loop>
<source src="/wp-content/uploads/2010/04/html5-audio-loop.ogg">
<source src="/wp-content/uploads/2010/04/html5-audio-loop.wav">
<source src="/wp-content/uploads/2010/04/html5-audio-loop.mp3">
</audio>
Loop Method 2
<audio id="audio_2" controls preload>
<source src="/wp-content/uploads/2010/04/html5-audio-loop.ogg">
<source src="/wp-content/uploads/2010/04/html5-audio-loop.wav">
<source src="/wp-content/uploads/2010/04/html5-audio-loop.mp3">
</audio>
document.getElementById('audio_2').addEventListener('ended', function(){
this.currentTime = 0;
}, false);
Loop Method 3
<audio id="audio_3" controls preload>
<source src="/wp-content/uploads/2010/04/html5-audio-loop.ogg">
<source src="/wp-content/uploads/2010/04/html5-audio-loop.wav">
<source src="/wp-content/uploads/2010/04/html5-audio-loop.mp3">
</audio>
<audio id="audio_4" controls preload>
<source src="/wp-content/uploads/2010/04/html5-audio-loop.ogg">
<source src="/wp-content/uploads/2010/04/html5-audio-loop.wav">
<source src="/wp-content/uploads/2010/04/html5-audio-loop.mp3">
</audio>
document.getElementById('audio_3').addEventListener('ended', function(){
this.currentTime = 0;
this.pause();
document.getElementById('audio_4').play();
}, false);
document.getElementById('audio_4').addEventListener('ended', function(){
this.currentTime = 0;
this.pause();
document.getElementById('audio_3').play();
}, false);
Browser Support
Final Thoughts
发表评论
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iframe 高度自适应
2011-11-03 17:07 1364转自:http://apps.hi.baidu.com/sha ... -
WordPress 博客添加新浪微博挂件:
2011-06-22 14:07 14711.点击链接http://t.sina ... -
HTML5 影音 ( Video ) 概論
2011-05-25 16:25 10531 Video介紹 引用我翻譯文檔《在HTML5頁面 ... -
处理火狐自动播放视频
2011-05-18 17:54 1445版权声明:转载时请 ... -
教你用HTML5开发iPhone应用程序
2011-05-13 17:38 1182你一整年都像现在一样沮丧,这我知道。所有铁杆Objecti ... -
很给力,20个HTML5视频播放器及代码
2011-05-09 14:45 1971本文来源: http://www.uleadesi ... -
HTML 5 Video概述
2011-05-09 13:32 1015本文来自:http://www.xlnv.ne ... -
支持移动平台的Html5播放器
2011-05-09 13:25 2904本文转自:http://www.riameeting ... -
HTML5 API简介一(Canvas,Audio/Video,Geolocation)
2011-05-09 13:22 1559本文来自:http://www.myext.cn/web ... -
HTML5资源
2011-05-09 11:56 1217JS APIs: 选择器 W3C草案:Selecto ... -
HTML5 Audio/Video 标签,属性,方法,事件
2011-05-09 11:53 1420本文转自:http://directguo.com/blo ... -
DIV实现隐藏与显示
2011-05-06 15:23 751css中display属性的参考值: display:n ... -
HTML5+CSS3+JQuery打造自定义视频播放器
2011-05-06 12:57 6726简介HTML5的<video> ... -
HTML 5 <video> preload 属性
2011-05-06 12:54 1142设置为预加载的 video 元素: <vide ... -
HTML5 – Video
2011-05-06 12:51 1045在HTML5以前若我們要在網頁中播放影片時,需要使用Act ... -
超過 23 個開源的 HTML5 影音播放器與框架
2011-05-06 12:03 7522超過 23 個開源的 HTML5 影音播放器與框架 - ... -
Building a better HTML5 video player with Glow
2011-05-06 11:51 1071Last year I wrote a post (Bu ... -
Ambilight для тэга video
2011-05-06 11:49 773В некоторых топовых моделях т ... -
怎样用js+html5实现视频的播放控制
2011-05-06 11:46 1405html5 代码: <video width ... -
22个HTML5的初级技巧
2011-05-06 11:45 725Web技术的发展速度太快了,如果你不与时俱进,就会被淘汰。 ...
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