手机摇一摇效果-html5

浏览数：23 / 时间：2015年06月11日

1.手机摇一摇效果实现

2.播放声音

<!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>
    <script type="text/javascript">
        //Javascript
    </script>
</head>
<body onload="init()">
<p>用力摇一摇你手机</p>
<audio id="musicBox" preload="metadata" controls src="5018.mp3" autostart="0">
</audio>
<div id="btn" class="btn">点击播放</div>
<script type="text/javascript">
        var SHAKE_THRESHOLD = 3000;
        var last_update = 0;
        var media = document.getElementById("musicBox");
        var btn = document.getElementById("btn");
        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) {
                    //media.setAttribute("autostart", 1);
                    //media.setAttribute("src", "5018.mp3");
                    //media.load();
                    media.play();
　　　　　　　　　　　　alert("弹窗了");
                }
                last_x = x;
                last_y = y;
                last_z = z;
            }
        }

</script>
</body>
</html>