<html>
<head>
<title>DeviceOrientationEvent</title>
<meta charset="UTF-8" />
</head>
<body>
<p>左右：<span id="alpha">0</span></p>
<p>前后：<span id="beta">0</span></p>
<p>扭转：<span id="gamma">0</span></p>
<p>指北针指向：<span id="heading">0</span>度</p>
<p>指北针精度：<span id="accuracy">0</span>度</p>
<script type="text/javascript">
function orientationHandler(event) {
document.getElementById("alpha").innerHTML = event.alpha;
document.getElementById("beta").innerHTML = event.beta;
document.getElementById("gamma").innerHTML = event.gamma;
document.getElementById("heading").innerHTML = event.webkitCompassHeading;
document.getElementById("accuracy").innerHTML = event.webkitCompassAccuracy;
} if (window.DeviceOrientationEvent) {
window.addEventListener("deviceorientation", orientationHandler, false);
} else {
document.body.innerHTML = "What user agent u r using???";
}
</script>
</body>
</html>