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demo.html
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<!doctype html>
<html>
<head>
<meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1">
<meta charset="utf-8">
<title>文创汇升级提示</title>
<style>
html,
body {
height: 100%;
max-width: 100%;
margin: 0;
overflow: hidden;
font-family: "microsoft-yahei";
}
#space {
width: 100%
}
#warp {
position: absolute;
height: 635px;
z-index: 9;
overflow: auto;
margin: auto;
top: 0;
bottom: 0;
left: 0;
right: 0;
color: #fff;
padding: 10px;
width: 800px;
font-size: 14px;
line-height: 45px;
}
/*倒计时css*/
ul#countdown {
text-align: center;
margin: 2em 0 2em;
}
ul#countdown li {
display: inline-block;
margin-right: 28px;
width: 85px;
height: 85px;
text-align: center;
padding: 12px;
border: 1px solid #2be0f0;
border-radius:50%;
-webkit-border-radius:50%;
-moz-border-radius:50%;
position: relative;
}
ul#countdown li span{
font-size: 45px;
color: #fff;
font-weight: 100;
padding-top: 10px;
display: block;
}
ul#countdown li p.timeRefDays,
ul#countdown li p.timeRefHours,
ul#countdown li p.timeRefMinutes,
ul#countdown li p.timeRefSeconds {
color: #2be0f0;
font-size: 17px;
font-weight: 100;
font-style: "microsoft-yahei";
line-height: 0px;
font-style: italic;
}
/*倒计时加上圆圈*/
ul#countdown li i{
width: 85px;
height: 85px;
position: absolute;
display: block;
/*旋转动画*/
animation:circleRoate 5s infinite linear ;
}
.dotdot{
position: absolute;
left:-2px;
width: 10px;
height: 10px;
border-radius: 50%;
background:#ff6200;
}
@keyframes circleRoate{
from{transform: rotate(0deg);}
to{transform: rotate(360deg);}
}
</style>
<link rel="shortcut icon" type="image/x-icon" href="https://www.p2pcq.com/res/favicon.ico">
<script type="text/javascript" src="https://www.p2pcq.com/res/js/base/jquery-1.8.3.min.js"></script>
</head>
<body>
<canvas id="space"></canvas>
<div id="warp">
<p style="font-size:28px;text-align: center;">网站升级通知</p>
<p style="font-size:18px;text-indent: 2rem;">
为了给您提供更加安全、快捷、优质的服务体验，文创汇将于<span style="font-size:20px;color: #ff6200">2017年6月21日22:00——6月22日6:00</span>进行系统升级维护，在此期间<span style="font-size:20px;color: #ff6200">官方网站、微信订阅号</span>等页面将无法正常访问。还请广大客户避开此时间段操作，并提前做好资金规划。
</p>
<p style="text-align: right;font-size:18px;padding-right:30px;">文创汇团队</p>
<p style="text-align: right;font-size:18px;padding-right:30px;">2017.12.20</p>
<p style="border-top:1px solid #2be0f0;font-size:25px;text-align: center;font-weight: 100;padding-top: 25px;">升级完成倒计时</p>
<!-- 加入倒计时 -->
<ul id="countdown">
<li>
<span class="days"></span>
<p class="timeRefDays">days</p>
</li>
<li>
<span class="hours"></span>
<p class="timeRefHours">hours</p>
</li>
<li>
<span class="minutes"></span>
<p class="timeRefMinutes">minutes</p>
</li>
<li>
<i><b class="dotdot"></b></i>
<span class="seconds"></span>
<p class="timeRefSeconds">seconds</p>
</li>
<div class="clear"></div>
</ul>
</div>
<script>
window.requestAnimFrame = (function() {
return window.requestAnimationFrame
})();
var canvas = document.getElementById("space");
var c = canvas.getContext("2d");
var numStars =2000; //星星总数量
var radius = '0.' + Math.floor(Math.random() * 9) + 1;
var focalLength = canvas.width * 2;
var warp = 0;
var centerX, centerY;
var stars = [],
star;
var i;
var animate = true;
initializeStars();//初始化单颗星星
function executeFrame() {
if (animate)
requestAnimFrame(executeFrame);
moveStars();
drawStars();
}
function initializeStars() {
centerX = canvas.width / 2;
centerY = canvas.height / 2;
stars = [];
for (i = 0; i < numStars; i++) {
star = {
x: Math.random() * canvas.width,
y: Math.random() * canvas.height,
z: Math.random() * canvas.width,
o: '0.' + Math.floor(Math.random() * 99) + 1
};
stars.push(star);
}
}
function moveStars() {
for (i = 0; i < numStars; i++) {
star = stars[i];
star.z--;
if (star.z <= 0) {
star.z = canvas.width;
}
}
}
function drawStars() {
var pixelX, pixelY, pixelRadius;
// 适应屏幕 永远都是全屏
if (canvas.width != window.innerWidth || canvas.width != window.innerWidth) {
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
initializeStars();
}
if (warp == 0) {
c.fillStyle = "rgba(0,10,20,1)"; //黑蓝色的夜空很美丽
c.fillRect(0, 0, canvas.width, canvas.height);
}
//定义星星的颜色，从文创汇3原色中随机选一个
// var wch_color,star_color,stars_color;
// wch_color = ["#ff6200","#5CBFE4","#5983B7"];
// star_color = Math.floor((Math.random()*wch_color.length));
// stars_colors = wch_color[star_color];
c.fillStyle = "rgba(251, 251, 251, " + radius + ")";
for (i = 0; i < numStars; i++) {
star = stars[i];
pixelX = (star.x - centerX) * (focalLength / star.z);
pixelX += centerX;
pixelY = (star.y - centerY) * (focalLength / star.z);
pixelY += centerY;
pixelRadius = 1 * (focalLength / star.z);
c.fillRect(pixelX, pixelY, pixelRadius, pixelRadius);
c.fillStyle = "rgba(251, 251, 251, " + star.o + ")";
//c.fill();
}
}
executeFrame();
// 增加完成升级倒计时提示
$(function() {
show_time();
});
function show_time() {
var time_start = new Date().getTime(); //获取现在的时间
var time_end = new Date("2018/12/05 15:51:00").getTime(); //设定未来时间
//计算时间差
var time_distance = time_end - time_start;
if (time_distance > 0) {
// 天时分秒换算
var int_day = Math.floor(time_distance / 86400000)
time_distance -= int_day * 86400000;
var int_hour = Math.floor(time_distance / 3600000)
time_distance -= int_hour * 3600000;
var int_minute = Math.floor(time_distance / 60000)
time_distance -= int_minute * 60000;
var int_second = Math.floor(time_distance / 1000)
// 时分秒为单数时、前面加零
if (int_day < 10) {
int_day = "0" + int_day;
}
if (int_hour < 10) {
int_hour = "0" + int_hour;
}
if (int_minute < 10) {
int_minute = "0" + int_minute;
}
if (int_second < 10) {
int_second = "0" + int_second;
}
// 显示时间
$(".days").html(int_day);
$(".hours").html(int_hour);
$(".minutes").html(int_minute);
$(".seconds").html(int_second);
setTimeout("show_time()", 1000);
} else {
$(".days").html('00');
$(".hours").html('00');
$(".minutes").html('00');
$(".seconds").html('00');
}
}
</script>
</body>
</html>