js 手機搖一搖
阿新 • • 發佈：2019-03-23
const shark = (fn) => {
const shake = 3000;
let last_update = 0;
let x = 0;
let y = 0;
let z = 0;
let last_x = 0;
let last_y = 0;
let last_z = 0;
const deviceMotionHandler = (eventData) => {
const acceleration = eventData.accelerationIncludingGravity;
const currTime = new Date().valueOf();
const diffTime = currTime - last_update;
if (diffTime > 100) {
last_update = currTime;
x = acceleration.x;
y = acceleration.y;
z = acceleration.z;
const speed = Math.abs(x + y + z - last_x - last_y - last_z) / diffTime * 20000
if (speed > shake) {
fn()
}
last_x = x;
last_y = y;
last_z = z;
}
}
if (window.DeviceMotionEvent) {
window.addEventListener('devicemotion', deviceMotionHandler, false);
} else {
alert('本裝置不支援devicemotion事件');
}
}
export {
shark
}