添加背景音乐（解决苹果手机不能自动播放问题）

function myPlay(){
var audio = document.getElementById('Jaudio'),
play = function(){
audio.play();
document.removeEventListener("touchstart",play, false);
};
audio.play();
document.addEventListener("WeixinJSBridgeReady", function () {//微信
play();
}, false);
document.addEventListener('YixinJSBridgeReady', function() {//易信
play();
}, false);
document.addEventListener("touchstart",play, false);
}