手机浏览器摇一摇
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="initial-scale=1.0, width=device-width, user-scalable=no" />
<meta name="apple-mobile-web-app-capable" content="yes" />
<title>摇一摇</title>
</head>
<body>
<p>摇一摇!</p>
<audio style="display: none;" src="http://downsc.chinaz.net/files/download/sound1/201410/5018.mp3" id="musicBox" preload="preload" controls></audio>
<script>
var SHAKE_THRESHOLD = 3000;
var last_update = 0;
var x=y=z=last_x=last_y=last_z=0;
var media;
media= document.getElementById("musicBox");
function init(){
last_update=new Date().getTime();
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.play();
alert("已经触发了摇一摇");
}
last_x = x;
last_y = y;
last_z = z;
}
}
window.onload = function(){
init();
}
</script>
</body>
</html>