Javascript 如何在一个html页面中运行多个音频录制实例?
我使用了以下方法通过浏览器录制音频,其工作方式完美无缺:Javascript 如何在一个html页面中运行多个音频录制实例?,javascript,html,Javascript,Html,我使用了以下方法通过浏览器录制音频,其工作方式完美无缺: <div class="center-align"> <h1>Example 1 - <span>Version_8 </span></h1> <p>getUserMedia() - AudioContext() - <a href="https://github.com/mattdiamond/Recorderjs&q
<div class="center-align">
<h1>Example 1 - <span>Version_8 </span></h1>
<p>getUserMedia() - AudioContext() - <a href="https://github.com/mattdiamond/Recorderjs">RecorderJS</a> - exportWAV()</p>
<audio controls autoplay></audio>
<br>
<button class="btn waves-effect waves-light js-start">Start</button>
<button class="btn waves-effect waves-light js-stop" disabled>Stop</button>
<br>
<br>
<button class="btn waves-effect waves-light js-code">Show Code</button>
</div>
<hr>
<pre style="font-family: GillSans, Calibri, Trebuchet, sans-serif;" class="hide"></pre>
<script src="./recorder.js"></script>
<script src="https://cdn.webrtc-experiment.com/MediaStreamRecorder.js"> </script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/0.100.2/js/materialize.min.js"></script>
<script class="containerScript">
let recorder;
let context;
let audio = document.querySelector('audio');
let startBtn = document.querySelector('.js-start');
let stopBtn = document.querySelector('.js-stop');
let codeBtn = document.querySelector('.js-code');
let pre = document.querySelector('pre');
window.URL = window.URL || window.webkitURL;
/**
* Detecte the correct AudioContext for the browser
* */
window.AudioContext = window.AudioContext || window.webkitAudioContext;
navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;
let onFail = function(e) {
alert('Error '+e);
console.log('Rejected!', e);
};
let onSuccess = function(s) {
console.log('Recording...');
let tracks = s.getTracks();
startBtn.setAttribute('disabled', true);
stopBtn.removeAttribute('disabled');
context = new AudioContext();
let mediaStreamSource = context.createMediaStreamSource(s);
recorder = new Recorder(mediaStreamSource);
recorder.record();
stopBtn.addEventListener('click', ()=>{
console.log('Stop Recording...');
stopBtn.setAttribute('disabled', true);
startBtn.removeAttribute('disabled');
recorder.stop();
tracks.forEach(track => track.stop());
recorder.exportWAV(function(s) {
audio.src = window.URL.createObjectURL(s);
});
});
}
startBtn.addEventListener('click', ()=>{
if (navigator.getUserMedia) {
/**
* ask permission of the user for use microphone or camera
*/
navigator.getUserMedia({audio: true}, onSuccess, onFail);
} else {
console.warn('navigator.getUserMedia not present');
}
});
codeBtn.addEventListener('click', () => {
pre.classList.toggle('hide');
pre.innerHTML = document.querySelector('.containerScript').innerHTML;
});
</script>
示例1-版本8
getUserMedia()-AudioContext()--exportWAV()
开始
停止
显示代码
让录音机;
让语境;
let audio=document.querySelector('audio');
让startBtn=document.querySelector('.js start');
让stopBtn=document.querySelector('.js stop');
让codeBtn=document.querySelector('.js-code');
let pre=document.querySelector('pre');
window.URL=window.URL | | window.webkitURL;
/**
*检测浏览器的正确音频上下文
* */
window.AudioContext=window.AudioContext | | window.webkitadiocontext;
navigator.getUserMedia=navigator.getUserMedia | | navigator.webkitGetUserMedia | | navigator.mozGetUserMedia | | navigator.msGetUserMedia;
设onFail=函数(e){
警报(“错误”+e);
console.log('Rejected!',e);
};
让onSuccess=函数{
console.log('Recording…');
让tracks=s.getTracks();
startBtn.setAttribute('disabled',true);
stopBtn.removeAttribute(“已禁用”);
上下文=新的AudioContext();
让mediaStreamSource=context.createMediaStreamSource;
记录器=新记录器(mediaStreamSource);
recorder.record();
stopBtn.addEventListener('单击',()=>{
console.log('停止记录…');
stopBtn.setAttribute('disabled',true);
startBtn.removeAttribute(“已禁用”);
录音机。停止();
tracks.forEach(track=>track.stop());
记录器.exportWAV(功能){
audio.src=window.URL.createObjectURL;
});
});
}
startBtn.addEventListener('单击',()=>{
if(navigator.getUserMedia){
/**
*使用麦克风或摄像头时,请征得用户的许可
*/
getUserMedia({audio:true},onSuccess,onFail);
}否则{
console.warn('navigator.getUserMedia不存在');
}
});
codeBtn.addEventListener('单击',()=>{
pre.classList.toggle('hide');
pre.innerHTML=document.querySelector('.containerScript').innerHTML;
});
现在,我希望有多个这样的“录制和重播”集的实例。在复制上述代码时,只有第一个实例在工作。如何复制/重命名js变量,使每个变量集独立工作
有人能帮我在一个页面中处理各种实例吗