<html lang="zh">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<title>环形倒计时</title>
</head>
<body>
<div class="flex-container">
<div class="outbox"> </div>
<!-- SVG AREA -->
<svg class="svg">
<circle id="cls" class="cls run-anim" cx="80" cy="80" r="75.5"></circle>
<circle id="smallYuan" class="roundSmall fillStyle" cx="80" cy="4" r="4"></circle>
</svg>
<!-- SVG AREA END -->
<div class="boxDIv">
<div class="OutTime" id="OutTime"></div>
</div>
</div>
<script>
let TimeVal = 0.1; //传入分钟
let entryTime = parseInt(new Date().getTime() / 1000);//进入页面的当前时间
let currentTime = 0;//当前时间
let maxtime = TimeVal * 60; // 分钟 * 60 = 最多走几秒
let circle = document.getElementById('cls'); //获取大圆环
let smallYuan = document.getElementById('smallYuan'); //获取小圆圈
let total;//动画总时长
let count = 0;//动画总时长
function CountDown() {
currentTime = parseInt(new Date().getTime() / 1000); //在定时器里面每隔一秒记录当前时间；
let TimeDifference = (currentTime - entryTime); //时间差
let mytime = maxtime - TimeDifference //传入的秒数 - 已经走掉的秒数 = 当前还剩多少秒数
if (TimeDifference <= maxtime) { //如果已经走掉的秒数 小于等于 传入的秒数
minutes = Math.floor(mytime / 60);
seconds = Math.floor(mytime % 60);
console.log(minutes, seconds)
if (seconds <= 9) {
seconds = '0' + seconds
}
if (minutes <= 9) {
minutes = '0' + minutes
}
msg = minutes + ":" + seconds;
document.getElementById('OutTime').innerHTML = msg;
if(count == 0){
circleTime();
}
count ++
} else {
count = 0;
clearInterval(timer);
console.log("时间到，结束!");
}
}
function circleTime() {
total = maxtime;
circle.style.animationDuration = total + "s";//动画时长
circle.style.animationPlayState = "running";
smallYuan.style.animationDuration = total + "s";//动画时长
smallYuan.style.animationPlayState = "running";
//动画播放状态 running：指定正在运行的动画
}
timer = setInterval("CountDown()", 1000);
</script>
</body>
<style>
* {
margin: 0;
padding: 0;
}
html {
font: 100% "Montserrat Light", serif;
height: 100vh;
width: 100%;
overflow: visible;
}
body {
height: inherit;
width: inherit;
}
.flex-container {
width: 180px;
height: 180px;
margin: 0 auto;
position: relative;
background-color: #eeeeee;
border-radius: 50%;
color: #ffffff;
margin-top: 100px;
}
.outbox {
width: 85%;
height: 85%;
border-radius: 100%;
background-color: #fff;
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
}
.svg {
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
width: 160px;
height: 160px;
}
.cls {
fill: none;
stroke: #000;
stroke-linecap: round;
stroke-miterlimit: 10;
stroke-width: 4px;
stroke-dasharray: 475;
/*stroke-dasharray:475;代表： 虚线长475，间距475，然后重复 虚线长475，间距475 */
stroke-dashoffset: 475;/* 偏移量 */
/* stroke-dashoffset: 475; 用半径 * 2 * 3.1415926 得出偏移量 475 */
transform: rotate(270deg);
transform-origin: 50% 50%;
}
.run-anim {
-webkit-animation-name: dash;
-moz-animation-name: dash;
-o-animation-name: dash;
animation-name: dash;
animation-duration: 0s;
animation-play-state: paused;
animation-fill-mode: none;
animation-iteration-count: 1;
animation-timing-function: linear;
}
@keyframes dash {
0% {
stroke: #D65E9E;
stroke-dashoffset: 0;
}
100% {
stroke: #D65E9E;
stroke-dashoffset: 475;
}
}
.boxDIv {
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
font-size: 38px;
font-family: Source Han Sans CN;
font-weight: bold;
color: #333333;
}
.fillStyle{
fill: #fff;
transform: rotate(0deg);
transform-origin: 50% 50%;
}
.roundSmall{
stroke: #e1e1e1;
-webkit-animation-name: rotate;
-moz-animation-name: rotate;
-o-animation-name: rotate;
animation-name: rotate;
animation-duration: 0s;
animation-play-state: paused;
animation-fill-mode: none;
animation-iteration-count: 1;
animation-timing-function: linear;
}
@keyframes rotate {
0% {
transform: rotate(-1deg);
}
100% {
transform: rotate(-360deg);
}
}
</style>
</html>
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