HTML页面audio的autoplay自动播放音乐

<audio preload autoplay loop id="music">
     <source src="/music/bg.mp3" type="audio/mpeg">
</audio>

<script type="text/javascript">
    window.onload = function(){
             setInterval("toggleSound()",1);
        }
    function toggleSound() {
                var music = document.getElementById("music");//获取ID  
                if (music.paused) { //判读是否播放  
                    music.paused=false;
                    music.play(); //没有就播放 
                }    
        }
</script>