//运动事件监听
if (window.DeviceMotionEvent) {
alert('支持')
window.addEventListener('devicemotion', deviceMotionHandler, false);
} else {
alert('不支持')
}
//获取加速度信息
//通过监听上一步获取到的x, y, z 值在一定时间范围内的变化率,进行设备是否有进行晃动的判断。
//而为了防止正常移动的误判,需要给该变化率设置一个合适的临界值。
var SHAKE_THRESHOLD = 10000;
var last_update = 0;
var x, y, z, last_x = 0, last_y = 0, last_z = 0;
var Index = 0, timout, intime = false;
function deviceMotionHandler(eventData) {
var acceleration = eventData.accelerationIncludingGravity;
var curTime = new Date().getTime();
if ((curTime - last_update) > 10) {
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) {
console.log("当摇动效率大于设置效率(10000)时反馈数据:" + speed + ",<br>" + x + ",<br>" + y + ",<br>" + z)
Index++;
if (!intime) {
intime = true;
Index = 0;
settimestart()
}
// alert("你中奖啦!"); // Do something
}
function settimestart() {
timout = setTimeout(function () {
intime = false;
console.log("摇一摇结果:" + Index);
clearTimeout(timout);
}, 3000)
}
last_x = x;
last_y = y;
last_z = z;
}
}
JS-摇一摇功能
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转载自blog.csdn.net/weixin_40308535/article/details/80808791
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