H5版的手机摇一摇
真心感觉 H5 的强大啊,也感觉到一股热潮开始翻滚起来了,最近业界关于 H5 的报道争先恐后,貌似谁还不准备好的话就铁定吃亏了似的,就好像前几年 iOS、Android 刚兴起一样,抓住了机遇学到了技术要点,对自己以后的职业生涯发展会有很不一样的结果。
该功能是在 HTML5研究小组 看到的,然后自己在 iphone 上实践了下,还真是那么一回事呀。
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var SHAKE_THRESHOLD = 5000; var last_update = 0; var x, y, z, last_x = 0, last_y = 0, last_z = 0; 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) { alert( "shake!" ); } last_x = x; last_y = y; last_z = z; } } if (window.DeviceMotionEvent) { window.addEventListener( 'devicemotion' ,deviceMotionHandler, false ); } else { document.getElementById( "dmEvent" ).innerHTML = "Not supported on your device." } |