<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no"/>
<meta name="format-detection"content="telephone=no">
<title>html5重力感应事件</title>
</head>
<body>
<p>摇一摇去触发html5重力感应事件</p>
<div id="j"></div>
<script type="text/javascript">
if (window.DeviceMotionEvent) {
window.addEventListener('devicemotion',deviceMotionHandler, false);
}
var speed = 1;//速度
var x = y = z = lastX = lastY = lastZ = 0;
function deviceMotionHandler(eventData) {
var acceleration =eventData.accelerationIncludingGravity;
x = acceleration.x;
y = acceleration.y;
z = acceleration.z;
//document.getElementById("j").innerHTML = "\n "+Math.abs(x-lastX)+"\n"+Math.abs(y-lastY)+"\n"+Math.abs(z-lastZ);
if(Math.abs(x-lastX) > speed || Math.abs(y-lastY) > speed || Math.abs(z-lastZ) > speed) {
//简单的摇一摇触发代码
//alert('触发了重力感应');
document.getElementById("j").innerHTML = "\n "+Math.abs(x-lastX);
}
lastX = x;
lastY = y;
lastZ = z;
}
</script>
</body>
</html>
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