我正在得到错误信息..
DOMException: play()失败，因为用户没有首先与文档交互。
．．当使用Chrome 66版本在桌面上播放视频时。
我确实发现一个广告开始自动播放在一个网站上，但使用以下HTML:
<video
title="Advertisement"
webkit-playsinline="true"
playsinline="true"
style="background-color: rgb(0, 0, 0); position: absolute; width: 640px; height: 360px;"
src="http://ds.serving-sys.com/BurstingRes/Site-2500/Type-16/1ff26f6a-aa27-4b30-a264-df2173c79623.mp4"
autoplay=""></video>
那么，绕过Chrome v66的自动播放拦截器真的像添加webkit-playsinline="true"， playsinline="true"和autoplay=""属性<video>元素一样简单吗?这有什么负面影响吗?
扩展DOM元素，处理错误，优雅地降级
下面我使用原型函数来包装原生DOM播放函数，获取它的承诺，然后在浏览器抛出异常时将其降级为播放按钮。这个扩展解决了浏览器的缺点，是即插即用的任何页面与目标元素的知识(s)。
// JavaScript
// Wrap the native DOM audio element play function and handle any autoplay errors
Audio.prototype.play = (function(play) {
return function () {
var audio = this,
args = arguments,
promise = play.apply(audio, args);
if (promise !== undefined) {
promise.catch(_ => {
// Autoplay was prevented. This is optional, but add a button to start playing.
var el = document.createElement("button");
el.innerHTML = "Play";
el.addEventListener("click", function(){play.apply(audio, args);});
this.parentNode.insertBefore(el, this.nextSibling)
});
}
};
})(Audio.prototype.play);
// Try automatically playing our audio via script. This would normally trigger and error.
document.getElementById('MyAudioElement').play()
<!-- HTML -->
<audio id="MyAudioElement" autoplay>
<source src="https://www.w3schools.com/html/horse.ogg" type="audio/ogg">
<source src="https://www.w3schools.com/html/horse.mp3" type="audio/mpeg">
Your browser does not support the audio element.
</audio>
扩展DOM元素，处理错误，优雅地降级
下面我使用原型函数来包装原生DOM播放函数，获取它的承诺，然后在浏览器抛出异常时将其降级为播放按钮。这个扩展解决了浏览器的缺点，是即插即用的任何页面与目标元素的知识(s)。
// JavaScript
// Wrap the native DOM audio element play function and handle any autoplay errors
Audio.prototype.play = (function(play) {
return function () {
var audio = this,
args = arguments,
promise = play.apply(audio, args);
if (promise !== undefined) {
promise.catch(_ => {
// Autoplay was prevented. This is optional, but add a button to start playing.
var el = document.createElement("button");
el.innerHTML = "Play";
el.addEventListener("click", function(){play.apply(audio, args);});
this.parentNode.insertBefore(el, this.nextSibling)
});
}
};
})(Audio.prototype.play);
// Try automatically playing our audio via script. This would normally trigger and error.
document.getElementById('MyAudioElement').play()
<!-- HTML -->
<audio id="MyAudioElement" autoplay>
<source src="https://www.w3schools.com/html/horse.ogg" type="audio/ogg">
<source src="https://www.w3schools.com/html/horse.mp3" type="audio/mpeg">
Your browser does not support the audio element.
</audio>
