一個簡單的HTML5搖一搖執行個體

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><meta http-equiv="Cache-Control" content="no-cache"/><meta name="viewport" content="width=device-width,initial-scale=1.0,minimum-scale=1.0, maximum-scale=2.0"/><meta name="MobileOptimized" content="240"/><title>HTML搖一搖。。。

</title> <script type="text/javascript"> var SHAKE_THRESHOLD = 3000; var last_update = 0; var x=y=z=last_x=last_y=last_z=0; var media; function init(){last_update=new Date().getTime();media= document.getElementById("musicBox");if (window.DeviceMotionEvent) { window.addEventListener(‘devicemotion‘,deviceMotionHandler, false); } else{alert(‘not support mobile event‘);}} function deviceMotionHandler(eventData) { var acceleration =eventData.accelerationIncludingGravity; var curTime = new Date().getTime(); if ((curTime - last_update)> 100) { 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("shaked");} last_x = x; last_y = y; last_z = z; } } </script></head> <body onload="init()"> html5手機搖一搖功能,搖一搖試試看</body> </html>


一個簡單的HTML5搖一搖執行個體

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