我的服务器上有一个名为test.mp3的文件-我可以播放它
我正尝试使用xmlhttprequestget下载它，然后将响应分配给音频播放器。
我试过了

servpl.onclick = e =>{
const xhr = new XMLHttpRequest();

xhr.open('GET', 'sounds/test.mp3');

// Send the request over the network
xhr.send();
xhr.onload = function() {
if (xhr.status != 200) { // analyze HTTP status of the response
    alert(`Error ${xhr.status}: ${xhr.statusText}`); // e.g. 404: Not Found
} else { // show the result
    alert(`Done, got ${xhr.response.length} bytes`); // response is the server response
    //    recordedAudio.autoplay=true;
    recordedAudio.src=xhr.response;
    recordedAudio.play();

   document.getElementById("display").innerHTML+=" after play sound";  
 
    }
};
document.getElementById("display").innerHTML+=" Server Play clicked";

}