HTML5 audio 标签在IOS上多个属性无法生效，声音无法播放
测试例子 html5 audio标签在ios 浏览器
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<audio id="ringtone" loop="loop" src="sounds/ringtone.wav"></audio>
</body>
</html>
<script>
function audioAutoPlay(id){
var audio = document.getElementById(id),
play = function(){
audio.play();
document.removeEventListener("touchstart",play, false);
};
audio.play();
document.addEventListener("WeixinJSBridgeReady", function () {
play();
}, false);
document.addEventListener('YixinJSBridgeReady', function() {
play();
}, false);
document.addEventListener("touchstart",play, false);
}
audioAutoPlay('ringtone');
</script>