HTML5摇一摇，如何判断设备摇动 – H5陀螺仪

作者：管理员 2018-01-30 11:12:59 分类：HTML/CSS 阅读（10790） 0

好奇宝宝花点时间看了看这玩意儿，感觉还蛮好玩的样子，实际用处似乎不大，不过如果你是经常做移动端活动页面，那很可能用得上哦，不多说，直接贴代码和demo，有案例

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<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">

<head>
<title>摇一摇抽签</title>
<meta charset="utf-8">
<style>
* {
font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "STHeitiSC-Light", "Microsoft YaHei", "微软雅黑", Arial, sans-serif;
}
html, body {
margin: 0;
width: 100%;
height: 100%;
background: url("./img/background.jpg") no-repeat center center;
background-size: cover;
}

/* 签筒摇动动画 */
@keyframes play {
100% {
background-position: -737px -2px;
}
}
@-webkit-keyframes play {
100% {
background-position: -737px -2px;
}
}
.sprite {
width: 145px;
height: 300px;
display: inline-block;
overflow: hidden;
background: url('./img/animation.png') no-repeat -2px -2px;
animation: play 0.8s steps(5) infinite;
-webkit-animation: play 0.8s steps(5) infinite;
}

/* 半透明遮罩层 */
.cover {
background-size: 50%;
background: rgba(0, 0, 0, 0.7) no-repeat top right;
position: fixed;
width: 100%;
height: 100%;
top: 0;
left: 0;
display: none;
}

/* share */
.share {
position: absolute;
width: 60%;
top: 2px;
right: 2px;
}

/* 解签的过渡图 */
.decode .inner {
width: 100%;
height: 100%;
background: url('./img/decode.png') center no-repeat;
background-size: 80%;
}

/* 签筒摇动动画容器 */
.item {
width: 100%;
text-align: center;
position: absolute;
top: 26%;
}

/* 静态签筒定位用的容器 */
.qiancover{
background-size: 50%;
position: absolute;
width: 100%;
top: 26%;
display: block;
}

/* 静态签筒 */
.qian {
width: 100px;
height: 300px;
margin: 0 auto;
overflow: hidden;
background: url('./img/qiantong.png') no-repeat -2px -2px;
background-size: contain;
}
@media only screen and (max-height: 480px) {
/*针对iphone 4s这类小屏幕手机优化签筒大小*/
.qian {
width: 88px;
}
}

/* 对联标题 */
.title {
color: #d50000;
position: absolute;
top: 10%;
width: 100%;
text-align: center;
}

/* 摇晃按钮的动画 */
@keyframes shake {
0% {
transform: scaleY(1) translate(30px);
}
50% {
transform: translate(-30px);
}
100% {
transform: scaleY(1) translate(30px);
}
}

/* 底部摆动按钮的样式 */
.buttonBox {
position: absolute;
bottom: 5%;
width: 100%;
}
.shakeBtn {
width: 76%;
max-width: 300px;
display: block;
margin: 0 auto;
cursor: pointer;
/*animation: shake 1.5s steps(5) infinite;*/
animation: shake 1.2s cubic-bezier(0, 0, 0.36, 1) infinite;
}

</style>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
</head>

<body>
<div style="display:none">

<img src="./img/thumbnail.gif" />
</div>
<h2 class="title">摇一摇, 来抽签</h2>
<section class="qiancover">
<div class="qian"></div>
</section>

<section class="buttonBox">
<img src="./img/button02.png" class="shakeBtn" onclick="start();">
</section>

<div class="cover result">
<img src="./img/share.png" class="share">
<div class="item">
<div class="sprite a1"></div>
</div>
</div>

<div class="cover decode">
<div class="inner"></div>
</div>

<script src="./js/zepto.min.js"></script>
<script src="./js/index.js"></script>
</body>

</html>

js部分，记得需要zepot.js

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"use strict";
var isStarted = false;

// 开始摇签
function start() {
isStarted = true;
$('.qiancover').hide();
$('.decode').hide();
$('.result').show();
// setTimeout(showDecode, 3000);
}

// 显示正在解签
function showDecode() {
$('.result').hide();
$('.decode').show();
setTimeout(jumpToDecode, 3000);
}

function jumpToDecode(){
var urls = ["#", "#"];
var jumpTo = urls[parseInt(Math.random() * urls.length)];
window.location = jumpTo;
};

//摇一摇(使用DeviceMotion事件, 推荐,应为可以计算加速度)
if(window.DeviceMotionEvent) {
var speed = 25;
var x, y, z, lastX, lastY, lastZ;
x = y = z = lastX = lastY = lastZ = 0;

window.addEventListener('devicemotion', function(event){
var acceleration = event.accelerationIncludingGravity;
x = acceleration.x;
y = acceleration.y;
if(Math.abs(x-lastX) > speed || Math.abs(y-lastY) > speed) {
start();
}
lastX = x;
lastY = y;
}, false);
}

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