Audio autoplay

window.addEventListener('load', () => {

// noinspection JSUnresolvedVariable

let audioCtx = new (window.AudioContext || window.webkitAudioContext)();

let xhr = new XMLHttpRequest();

xhr.open('GET', 'audio-autoplay.wav');

xhr.responseType = 'arraybuffer';

xhr.addEventListener('load', () => {

let playsound = (audioBuffer) => {

let source = audioCtx.createBufferSource();

source.buffer = audioBuffer;

source.connect(audioCtx.destination);

source.loop = false;

source.start();

setTimeout(function () {

let t = document.createElement('p');

t.appendChild(document.createTextNode((new Date()).toLocaleString() + ': Sound played'));

document.querySelector('.output').appendChild(t);

playsound(audioBuffer);

}, 1000 + Math.random()*2500);

};

audioCtx.decodeAudioData(xhr.response).then(playsound);

});

xhr.send();

});