HTML5 标准中加入了两个非常强大的标签 audio
和 video
,让我们在网页中嵌入视频和音频变得非常方便,但是不幸的是目前用户所使用的有很大一部分浏览器都是老版本的,并不支持这两个标签,这使前端开发者们很困扰,这里介绍一款相对来讲支持浏览器比较多的网页音频播放器 ------ SoundManager 2。
以下是 SoundManager 2 支持的浏览器版本,你没看错,它甚至支持 IE5:
- Firefox (all versions), Windows/Mac
- Safari 1.3+ (Mac) / All Windows versions
- Mobile Webkit: iOS 4.0 devices, iPad 3.2 (original iPad iOS release) and newer
- Android (2.3+, confirmed on 2.3.3.)
- Google Chrome (all versions/OSes)
- Internet Explorer 5.0+, Windows
- Opera 9.10 (slightly buggy, 9.5+ ideal), Windows/Mac
- Netscape 8.0+, Windows/Mac
- Firefox 1.5+, Linux (Flash 9 beta).
创建一个简单的音频播放器
下面将演示如何创建一个简单的音频播放器:
播放器功能
- 播放和暂停
- 取消和重新播放
- 加大/减小声音
- 快进/快退 30 秒
- 显示播放进度
- 显示当前音量
根据上面的列表,我们需要 6 个按钮,所以我们现在 HTML 中生成 6 个按钮控件。
<div class="player">
<div class="player__audio-info">
<div>
Played
<span class="player__time-elapsed">-</span> of
<span class="player__time-total">-</span>
<button class="player__previous button button--small">Move back</button>
<button class="player__next button button--small">Move forth</button>
</div>
<div>
Volume: <span class="player__volume-info">100</span>
<button class="player__volume-down button button--small">Volume down</button>
<button class="player__volume-up button button--small">Volume up</button>
</div>
</div>
<button class="player__play button button--large">Play</button>
<button class="player__stop button button--large">Stop</button>
</div>
添加一些样式
.player
{
display: inline-block;
width: 300px;
padding: 5px;
background-color: #E3E3E3;
border: 1px solid #000000;
}
.player span
{
font-weight: bold;
}
.button
{
text-indent: 200%;
white-space: nowrap;
overflow: hidden;
border: none;
padding: 0;
background: rgba(255,255,255,0);
cursor: pointer;
vertical-align: bottom;
}
.button--small
{
width: 19px;
height: 19px;
}
.button--large
{
width: 48px;
height: 48px;
}
.player__audio-info
{
padding-bottom: 5px;
border-bottom: 1px dotted #000000;
}
.player__audio-info div + div
{
margin-top: 10px;
}
.player__volume-info
{
display: inline-block;
width: 1.5em;
}
.player__play
{
background-image: url("http://i60.tinypic.com/14mbep2.png");
}
.player__play.is-playing
{
background-image: url("http://i57.tinypic.com/idyhd2.png");
}
.player__stop
{
background-image: url("http://i61.tinypic.com/35mehdz.png");
}
.player__previous
{
background-image: url("http://i60.tinypic.com/sdihc5.png");
}
.player__next
{
background-image: url("http://i57.tinypic.com/2s1nm77.png");
}
.player__volume-down
{
background-image: url("http://i60.tinypic.com/331nom0.png");
}
.player__volume-up
{
background-image: url("http://i60.tinypic.com/ekkc1t.png");
}
添加操作的 JavaScript 代码:
function formatMilliseconds(milliseconds) {
var hours = Math.floor(milliseconds / 3600000);
milliseconds = milliseconds % 3600000;
var minutes = Math.floor(milliseconds / 60000);
milliseconds = milliseconds % 60000;
var seconds = Math.floor(milliseconds / 1000);
milliseconds = Math.floor(milliseconds % 1000);
return (hours > 0 ? hours : '0') + ':' +
(minutes < 10 ? '0' : '') + minutes + ':' +
(seconds < 10 ? '0' : '') + seconds + ':' +
(milliseconds < 100 ? '0' : '') + (milliseconds < 10 ? '0' : '') + milliseconds;
}
var player = {
btnPlay: document.querySelector('.player__play'),
btnStop: document.querySelector('.player__stop'),
btnPrevious: document.querySelector('.player__previous'),
btnNext: document.querySelector('.player__next'),
btnVolumeDown: document.querySelector('.player__volume-down'),
btnVolumeUp: document.querySelector('.player__volume-up'),
timeElapsed: document.querySelector('.player__time-elapsed'),
timeTotal: document.querySelector('.player__time-total'),
volume: document.querySelector('.player__volume-info')
};
var audio = null;
soundManager.setup({
useFastPolling: true,
useHighPerformance: true,
onready: function() {
audio = soundManager.createSound({
id: 'audio',
url: 'http://freshly-ground.com/data/audio/mpc/20090119%20-%20Untitled%20Groove.mp3',
whileloading: function() {
player.timeTotal.textContent = formatMilliseconds(audio.durationEstimate);
},
whileplaying: function() {
player.timeElapsed.textContent = formatMilliseconds(audio.position);
},
onload: function() {
player.timeTotal.textContent = formatMilliseconds(audio.duration);
},
onfinish: function() {
var event;
try {
// Internet Explorer doesn't like this statement
event = new Event('click');
} catch (ex) {
event = document.createEvent('MouseEvent');
event.initEvent('click', true, false);
}
player.btnStop.dispatchEvent(event);
}
});
}
});
player.btnPlay.addEventListener('click', function() {
if (audio === null) {
return;
}
if (audio.playState === 0 || audio.paused === true) {
audio.play();
this.classList.add('is-playing');
} else {
audio.pause();
this.classList.remove('is-playing');
}
});
player.btnStop.addEventListener('click', function() {
if (audio === null) {
return;
}
audio.stop();
document.querySelector('.player__time-elapsed').textContent = formatMilliseconds(0);
player.btnPlay.classList.remove('is-playing');
});
player.btnVolumeDown.addEventListener('click', function() {
if (audio === null) {
return;
}
var volume = audio.volume - 10 < 0 ? 0 : audio.volume - 10;
audio.setVolume(volume);
player.volume.textContent = volume;
});
player.btnVolumeUp.addEventListener('click', function() {
if (audio === null) {
return;
}
var volume = audio.volume + 10 > 100 ? 100 : audio.volume + 10;
audio.setVolume(volume);
player.volume.textContent = volume;
});
player.btnPrevious.addEventListener('click', function() {
if (audio === null) {
return;
}
var position = audio.position - 30000 < 0 ? 0 : audio.position - 30000;
audio.setPosition(position);
player.timeElapsed.textContent = formatMilliseconds(audio.position);
});
player.btnNext.addEventListener('click', function() {
if (audio === null) {
return;
}
var position = audio.position + 30000 > audio.duration ? audio.duration : audio.position + 30000;
if (position === audio.duration) {
var event;
try {
// Internet Explorer doesn't like this statement
event = new Event('click');
} catch (ex) {
event = document.createEvent('MouseEvent');
event.initEvent('click', true, false);
}
player.btnStop.dispatchEvent(event);
} else {
audio.setPosition(position);
player.timeElapsed.textContent = formatMilliseconds(audio.position);
}
});
[实例] 使用JS播放声音——SoundManager 2
官方文档写得很详细,好东西
写个Demo
需要的文件有:下载soundmanager2包中的script文件夹和swf文件夹
Demo/
- index.html
Demo/script/
- jquery-1.8.2.min.js
- soundmanager2-nodebug-jsmin.js
Demo/swf/
- soundmanager2_flash_xdomain.zip
- soundmanager2_flash9_debug.swf
- soundmanager2_flash9.swf
- soundmanager2_debug.swf
- soundmanager2.swf
Demo/sound/
- msg.mp3
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>SoundDemo</title>
<script type="text/javascript" src="script/soundmanager2-nodebug-jsmin.js"></script>
<script type="text/javascript" src="script/jquery-1.10.0.min.js"></script>
<script type="text/javascript">
soundManager.setup({
url: 'swf/', //swf文件夹的位置
onready: function() {
soundManager.createSound({
id: 'msg',
autoLoad: true,
autoPlay: false,
url: 'sound/msg.mp3' //mp3文件的位置
});
}
});
$(document).ready(function () {
$('#play').click(function () {
soundManager.play('msg'); //点击按钮可播放
});
});
</script>
</head>
<body>
<input type='button' id='play' value='Play' />
</body>
</html>
遇到的问题
- 需要把Demo部署到服务器上才能正常, 否则还是会有?跨域的问题?(应该是这个问题吧), 不能加载本地文件. (意思是: 本地直接打开index.html是不能播放的, 但我上传到博客的服务器上就能播放了..有人不理解这个 - - 搜索"跨域"相关)
- 用的.wav文件在chrome中能正常播放, 但在IE中不能播放, 转成.mp3文件后就都可以正常播放了
将代码添加到我自己写的IM里成功播放声音
参考文档:
SoundManager属性
soundManager对象有许多可配置的属性,确定Flash的路径和其他行为。下面是SoundManager 2默认的属性,这适合大多数场合,一般情况下你不需要更改它们。
soundManager.url = “/path/to/swf-files/ ” ;
//SM2可以找到Flash影片(soundmanager2.swf,soundmanager2_flash9.swf和调试版本等)的路径。注意:如果没有设置,SM2将追加正确的SWF文件名,对flashVersion和debugMode设置。soundManager.allowScriptAccess = “always “;
//运行SWF(对象/嵌入属性)方式 可选:”always” or “sameDomain”soundManager.audioFormats = { … };
//定义支持哪种音频类型(默认情况下为MP3。)soundManager.bgColor =” #FFFFFF “;
// 背景颜色。soundManager.consoleOnly = true ;
//如果控制台正在使用,不创建或写入#soundmanager-debugsoundManager.debugMode = true ;
//是否启用调试模式soundManager.debugFlash = false ;
//是否启用调试里面的SWF输出,解决闪存/浏览器的问题soundManager.flashVersion = 8 ;
//flash版本(8或9)。一些API功能要求9。soundManager.flashPollingInterval = null ;
//毫秒,影响加载回调函数频率。如果为null,则使用默认50毫秒。soundManager.html5PollingInterval = null casino online ;
//毫秒,影响加载回调函数频率。如果为null,运行本地的HTML5更新事件。soundManager.html5Test = /^(probably|maybe)$/i jameshallison casino ;
//测试HTML5的音频格式。也可用/^probably$/isoundManager.flashLoadTimeout = 1000 ;
//毫秒 等待Flash视频加载的时间(0 =无穷) 超时显示加载失败soundManager.noSWFCache = false ;
//如果为TURE,在缓存文件上追加?ts={date}以释放缓存
soundManager.preferFlash = true ;
//是否用到useHTML5audio。目前,如果为 ture并且flash支持的话,将使用MP3/MP4 flash,因为HTML5音频在浏览器中显示有问题。soundManager.useConsole = true ;
//如果console.log()可用,则使用(否则,写入#soundmanager-debug 元素)soundManager.useFlashBlock = false ;
//需要flashblock.css,看演示效果时,是否用到flash blockers 。soundManager.useHighPerformance =false ;
//增强flash显示效果soundManager.useHTML5Audio = ture ;
//如果API支持,则使用HTML5 Audio() (大多数Safari浏览器,浏览器版本),火狐(没有MP3/MP4)。soundManager.waitForWindowLoad = false ;
//window.onload()执行完后,才运行soundManager.onloadsoundManager.wmode = NULL ;
//flash渲染模式 – 可为:null, “transparent”, or “opaque” (最后两个允许使用z-index)