html5 利用重力感应实现摇一摇换颜色可用来做抽奖等等
author:一佰互联 2019-04-20   click:158
我从网上找到了一个案例,是用来摇一摇换颜色的,非常好用,不过测试后,需要注意的有:

1、必须要ios或者是安卓4.0以上的才能实现功能应用。

2、如果加如z坐标的判断,就会出现屏幕乱变颜色的情况,估计太敏感了…………或者是没找到对的用法,希望大家能给指正

3、这个功能稍微改改,就可以变成抽奖的方法,比大转盘、刮刮卡要时尚些,哈哈 复制代码代码如下:
<script type="text/javascript">
var color = new Array("red", "blue", "yellow", "green", "#00f", "#0ff");
if(window.DeviceMotionEvent) {
var speed = 25;
var x = y = z = lastX = lastY = lastZ = 0;
window.addEventListener("devicemotion", function(){
var acceleration =event.accelerationIncludingGravity;
x = acceleration.x;
y = acceleration.y;
//z = acceleration.z;
if(Math.abs(x-lastX) > speed || Math.abs(y-lastY) > speed ) {
document.body.style.backgroundColor = color[Math.round(Math.random()*10)%6];
}
lastX = x;
lastY = y;
//lastZ = z;
}, false);
}
</script>