html5摇一摇代码优化包括DeviceMotionEvent等等

if(window.DeviceMotionEvent) {
var speed = 25;//定义一个数值
var x = y = z = lastX = lastY = lastZ = 0;//重置所有数值
window.addEventListener('devicemotion', function(){
var aeleration =event.aelerationIncludingGravity;//将传感值赋给aeleration
x = aeleration.x;
y = aeleration.y;
z = aeleration.z;
if(Math.abs(x-lastX) > speed || Math.abs(y-lastY) > speed ) {
// TODO:在此处可以实现摇一摇之后所要进行的数据逻辑操作
donghua();
}
lastX = x;
lastY = y;
lastZ = z;
}, false);
}

var f=1;
function donghua(){
//动画事件
$(".img").animate({left:'0',opacity:'1'},700,function(){f=1;});
});
if(window.DeviceMotionEvent) {
var speed = 25;//定义一个数值
var x = y = z = lastX = lastY = lastZ = 0;//重置所有数值
window.addEventListener('devicemotion', function(){
var aeleration =event.aelerationIncludingGravity;//将传感值赋给aeleration
x = aeleration.x;
y = aeleration.y;
z = aeleration.z;
if(Math.abs(x-lastX) > speed || Math.abs(y-lastY) > speed ) {
// TODO:在此处可以实现摇一摇之后所要进行的数据逻辑操作
if(f==1){
donghua();
f=0;
}
}
lastX = x;
lastY = y;
lastZ = z;
}, false);
}