javascript Web 音频 API：如何播放和停止音频？
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Web audio API: how to play and stop audio?
提问by kikkpunk
i use web audio API in my game in Chrome. To play the sound, I use web audio API.
我在 Chrome 的游戏中使用网络音频 API。为了播放声音，我使用了网络音频 API。
I learn it from the article: http://www.html5rocks.com/en/tutorials/webaudio/intro/
我从文章中了解到：http: //www.html5rocks.com/en/tutorials/webaudio/intro/
window.onload = init;
var context;
var bufferLoader;
function init() {
context = new webkitAudioContext();
bufferLoader = new BufferLoader(
context,
[
'0.mp3',
'2.mp3',
],
finishedLoading
);
bufferLoader.load();
}
function finishedLoading(bufferList) {
var source1 = context.createBufferSource();
var source2 = context.createBufferSource();
source1.buffer = bufferList[0];
source2.buffer = bufferList[1];
source1.connect(context.destination);
source2.connect(context.destination);
source1.noteOn(0);
source2.noteOn(0);
}
However, the sounds weren't played. Let alone i want to use noteOff(0)to stop them later.
但是，没有播放声音。更不用说我想稍后使用noteOff(0)来阻止它们。
Then i found this article http://updates.html5rocks.com/2012/02/HTML5-audio-and-the-Web-Audio-API-are-BFFs
然后我发现这篇文章http://updates.html5rocks.com/2012/02/HTML5-audio-and-the-Web-Audio-API-are-BFFs
And i change my code to:
我将代码更改为：
var context = new webkitAudioContext();
var analyser = context.createAnalyser();
var source;
var audio0 = new Audio();
audio0.src = '0.mp3';
audio0.controls = true;
audio0.autoplay = true;
audio0.loop = true;
source = context.createMediaElementSource(audio0);
source.connect(analyser);
analyser.connect(context.destination);
This time it is played!
这次玩了！
And here comes my problem: I want to stop the sound with a button.
我的问题来了：我想用按钮停止声音。
I tried to change the audio0.autoplay =false;
我试图改变audio0.autoplay =false;
var play0 = false;
$("#0").click(function(){
if(play0===false){
audio0.src = '0.mp3';
audio0.controls = true;
audio0.autoplay = true;
audio0.loop = true;
source = context.createMediaElementSource(audio0);
source.connect(analyser);
analyser.connect(context.destination);
play0=true;}
if(paly0){
audio0.autoplay=false;}
});
In stead of getting stop, it is played again every time i click the button.
每次我单击按钮时，它都会再次播放，而不是停止播放。
Two questions:
两个问题：
what's the difference between those two playing audio methods?
How can i stop the sound manually?
这两种播放音频的方法有什么区别？
如何手动停止声音？
Any help is greatly appreciated.
任何帮助是极大的赞赏。
回答by pimvdb
You can pause the audio element and set its time to 0, so that you effectively have "stop" functionality: http://jsfiddle.net/Z5ZuJ/.
您可以暂停音频元素并将其时间设置为0，以便您有效地拥有“停止”功能：http: //jsfiddle.net/Z5ZuJ/。
audio0.pause();
audio0.currentTime = 0;
