微信H5 ios 音乐不能自动播放问题

		 var voice = document.getElementById('audio');
		
		  if (typeof WeixinJSBridge == "object" && typeof WeixinJSBridge.invoke == "function") {
		            voice.play();
		        } else {
		            //監聽客户端抛出事件"WeixinJSBridgeReady"
		            if (document.addEventListener) {
		                document.addEventListener("WeixinJSBridgeReady", function(){
		                    voice.play();
		                }, false);
		            } else if (document.attachEvent) {
		                document.attachEvent("WeixinJSBridgeReady", function(){
		                    voice.play();
		                });
		                document.attachEvent("onWeixinJSBridgeReady", function(){
		                    voice.play();
		                });
		            }
		        }