此功能通过html5新特性重力加速实现，不多说，上代码：
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0,user-scalable=no" />
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>摇一摇，送妹子</title>
</head>
<body>
<div id="shake" style="font-size: 14px; margin: 10px; line-height: 35px; display: none;"></div>
<script type="text/javascript">
//需要判断浏览器是否支持
if (window.DeviceMotionEvent) {
window.addEventListener(‘devicemotion‘, deviceMotionHandler, false);
document.getElementById("shake").innerHTML = ‘摇一摇，送“妹子”。‘;
} else{
document.getElementById("shake").innerHTML = ‘您看到了以下提示，说明您现在还不支持摇一摇功能。‘;
}
var SHAKE_THRESHOLD = 3000;//摇动的阀值
var lastUpdate = 0;//变量保存上次更新的时间
var x, y, z, last_x, last_y, last_z;// x、y、z记录三个轴的数据以及上一次出发的时间
var count = 0;//计数器
function deviceMotionHandler(eventData) {
var acceleration = eventData.accelerationIncludingGravity;// 获取含重力的加速度
var curTime = new Date().getTime();// 获取当前时间
var diffTime = curTime -lastUpdate;//时间差
// 固定时间段
if (diffTime > 100) {
lastUpdate = 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;//速度
// document.getElementById("shake").innerHTML = document.getElementById("shake").innerHTML + "<br />" + speed;
//在阀值内
if(speed > SHAKE_THRESHOLD){
count++;
alert(‘摇的很给力，送个妹子给你。‘);
document.getElementById("shake").innerHTML += "<br />" + "已送你（" + count + "）个妹子！";
}
last_x = x;
last_y = y;
last_z = z;
}
}
document.getElementById("shake").style.display = ‘block‘;
</script>
</body>
</html>