html5 web 摇一摇切换歌曲

 <!DOCTYPE html>

 <html lang="en">

 <head>

     <meta charset="utf-8" />

     <meta name="viewport" content="width=device-width, initial-scale=1.0" />

     <title>摇一摇功能</title>

 </head>

 <body onload="init()">

 <p>用力摇一摇你手机</p>

 <audio id="musicBox" controls src=""/>

 </body>

 </html>

 <script type="text/javascript">

         //Javascript

         var SHAKE_THRESHOLD = 3000;

         var last_update = 0;

         var x = y = z = last_x = last_y = last_z = 0;

         function init() {

             if (window.DeviceMotionEvent) {

                 window.addEventListener('devicemotion', deviceMotionHandler, false);

             } else {

                 alert('not support mobile event');

             }

         }

         function deviceMotionHandler(eventData) {

             var acceleration = eventData.accelerationIncludingGravity;

             var curTime = new Date().getTime();

             if ((curTime - last_update) > 100) {

                 var diffTime = curTime - last_update;

                 last_update = curTime;

                 x = acceleration.x;

                 y = acceleration.y;

                 z = acceleration.z;

                 var speed = Math.abs(x + y + z - last_x - last_y - last_z) / diffTime * 10000;  

                 if (speed > SHAKE_THRESHOLD) {

                  alert("摇动了，播放");

                     var media=document.getElementById("musicBox");//获取音频控件

                     media.setAttribute("src","http://1.html5weby1y.sinaapp.com/2.mp3");

                     media.load();//加载音频

                     media.play();//播放音频

                 }

                 last_x = x;

                 last_y = y;

                 last_z = z;

             }

         }

     </script>
巴特西

html5 web 摇一摇切换歌曲

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