[英]Detect shake event with Javascript, with all major browsers/devices (iOS, Android)
[英]Detect a shake in iOS Safari with Javascript?
如何利用新的MobileSafari设备动作API捕获“摇晃”事件?
请参阅此博文: http : //www.jeffreyharrell.com/blog/2010/11/creating-a-shake-event-in-mobile-safari/
这说明了这个例子:
if (typeof window.DeviceMotionEvent != 'undefined') {
// Shake sensitivity (a lower number is more)
var sensitivity = 20;
// Position variables
var x1 = 0, y1 = 0, z1 = 0, x2 = 0, y2 = 0, z2 = 0;
// Listen to motion events and update the position
window.addEventListener('devicemotion', function (e) {
x1 = e.accelerationIncludingGravity.x;
y1 = e.accelerationIncludingGravity.y;
z1 = e.accelerationIncludingGravity.z;
}, false);
// Periodically check the position and fire
// if the change is greater than the sensitivity
setInterval(function () {
var change = Math.abs(x1-x2+y1-y2+z1-z2);
if (change > sensitivity) {
alert('Shake!');
}
// Update new position
x2 = x1;
y2 = y1;
z2 = z1;
}, 150);
}
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