手机端重力感应判断物品方向

作者: madisn | 来源:发表于2017-08-25 22:52 被阅读136次

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        * {
            padding: 0;
            margin: 0;
        }
        #one {
            width: 100px;
            height: 100px;
            background-color: yellow;
            position: absolute;
        }
    </style>
</head>
<body>
 <div id="one"></div>
 <script>
    var one = document.getElementById('one');
    if (window.DeviceMotionEvent) {
        window.addEventListener("devicemotion", function (event) {
            var gravityNum = event.accelerationIncludingGravity;
            var num = gravityNum .x;//x轴方向重力加速度，右侧倾斜<0,左侧倾斜>0
            console.log(num);
            if (num < -3) {
                one.style.left = '100px';
            } else if (num > 3) {
                one.style.left = 0;
            }
        }, false);
    } else {
        console.log("您的手机不支持重力感应");
    }
</script>
</body>
</html>