用JavaScript检测iOS Safari的震动？

我如何利用新的MobileSafari设备运动API捕捉“摇晃”事件？

Answer 1

看到这个真棒博客文章： 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); }