苹果手机不自动播放按钮

<!--苹果手机不能播放问题-->
<script type="text/javascript">
    document.addEventListener('DOMContentLoaded', function () {
        function audioAutoPlay() {
            var audio = document.getElementById('myaudio');
            audio.play();
            document.addEventListener("WeixinJSBridgeReady", function () {
                audio.play();
                }, false);
             }
             audioAutoPlay();
             });
        
　　       </script>
<!--苹果手机不能播放问题-->