JS+CSS实现滚动数字时钟效果
程序员文章站
2022-11-29 20:28:53
本篇内容我们用js配合css样式表来实现一个滚动时钟的动画效果，这个效果一般都是用在网页开场动画以及区域的时间显示中，非常好看，动画效果也很个性，我们先来看下运行后的效果：...
本篇内容我们用js配合css样式表来实现一个滚动时钟的动画效果，这个效果一般都是用在网页开场动画以及区域的时间显示中，非常好看，动画效果也很个性，我们先来看下运行后的效果：
下面就是这个滚动时钟动画的全部代码：
<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=gb2312" />
<title>css3+js滚动数字时钟代码-</title>
<style>
body{text-align: center;background-color: #0e141b;color: rgba(224, 230, 235, 0.89);font-family: 'roboto condensed', sans-serif;font-weight: 300;overflow: hidden;}
.column,.colon{display: inline-block;vertical-align: top;font-size: 86px;line-height: 86px;}
.column{-webkit-transition: -webkit-transform 300ms;transition: -webkit-transform 300ms;transition: transform 300ms;transition: transform 300ms, -webkit-transform 300ms;}
.colon{-webkit-transition: -webkit-transform 300ms;transition: -webkit-transform 300ms;transition: transform 300ms;transition: transform 300ms, -webkit-transform 300ms;-webkit-transform: translatey(calc(50vh - 43px));transform: translatey(calc(50vh - 43px));}
.colon:after{content: ':';}
.num{-webkit-transition: opacity 500ms, text-shadow 100ms;transition: opacity 500ms, text-shadow 100ms;opacity: 0.025;}
.num.visible{opacity: 1.0;text-shadow: 1px 1px 0px #336699;}
.num.close{opacity: 0.35;}
.num.far{opacity: 0.15;}
.num.distant{opacity: 0.1;}
</style>
</head>
<body>
<div class="column">
<div class="num">0</div>
<div class="num">1</div>
<div class="num">2</div>
</div>
<div class="column">
<div class="num">0</div>
<div class="num">1</div>
<div class="num">2</div>
<div class="num">3</div>
<div class="num">4</div>
<div class="num">5</div>
<div class="num">6</div>
<div class="num">7</div>
<div class="num">8</div>
<div class="num">9</div>
</div>
<div class="colon"></div>
<div class="column">
<div class="num">0</div>
<div class="num">1</div>
<div class="num">2</div>
<div class="num">3</div>
<div class="num">4</div>
<div class="num">5</div>
</div>
<div class="column">
<div class="num">0</div>
<div class="num">1</div>
<div class="num">2</div>
<div class="num">3</div>
<div class="num">4</div>
<div class="num">5</div>
<div class="num">6</div>
<div class="num">7</div>
<div class="num">8</div>
<div class="num">9</div>
</div>
<div class="colon"></div>
<div class="column">
<div class="num">0</div>
<div class="num">1</div>
<div class="num">2</div>
<div class="num">3</div>
<div class="num">4</div>
<div class="num">5</div>
</div>
<div class="column">
<div class="num">0</div>
<div class="num">1</div>
<div class="num">2</div>
<div class="num">3</div>
<div class="num">4</div>
<div class="num">5</div>
<div class="num">6</div>
<div class="num">7</div>
<div class="num">8</div>
<div class="num">9</div>
</div>
<script>
'use strict';
var size = 86;
var columns = array.from(document.getelementsbyclassname('column'));
var d = undefined,
c = undefined;
var classlist = ['visible', 'close', 'far', 'far', 'distant', 'distant'];
var use24hourclock = true;
function padclock(p, n) {
return p + ('0' + n).slice(-2);
}
function getclock() {
d = new date();
return [use24hourclock ? d.gethours() : d.gethours() % 12 || 12, d.getminutes(), d.getseconds()].reduce(padclock, '');
}
function getclass(n, i2) {
return classlist.find(function (class_, classindex) {
return i2 - classindex === n || i2 + classindex === n;
}) || '';
}
var loop = setinterval(function () {
c = getclock();
columns.foreach(function (ele, i) {
var n = +c[i];
var offset = -n * size;
ele.style.transform = 'translatey(calc(50vh + ' + offset + 'px - ' + size / 2 + 'px))';
array.from(ele.children).foreach(function (ele2, i2) {
ele2.classname = 'num ' + getclass(n, i2);
});
});
}, 200 + math.e * 10);
</script>
</body>
</html>
注意：其中最上面的是css样式内容，大家可以在其中进行调整颜色字体等
<style>
body{text-align: center;background-color: #0e141b;color: rgba(224, 230, 235, 0.89);font-family: 'roboto condensed', sans-serif;font-weight: 300;overflow: hidden;}
.column,.colon{display: inline-block;vertical-align: top;font-size: 86px;line-height: 86px;}
.column{-webkit-transition: -webkit-transform 300ms;transition: -webkit-transform 300ms;transition: transform 300ms;transition: transform 300ms, -webkit-transform 300ms;}
.colon{-webkit-transition: -webkit-transform 300ms;transition: -webkit-transform 300ms;transition: transform 300ms;transition: transform 300ms, -webkit-transform 300ms;-webkit-transform: translatey(calc(50vh - 43px));transform: translatey(calc(50vh - 43px));}
.colon:after{content: ':';}
.num{-webkit-transition: opacity 500ms, text-shadow 100ms;transition: opacity 500ms, text-shadow 100ms;opacity: 0.025;}
.num.visible{opacity: 1.0;text-shadow: 1px 1px 0px #336699;}
.num.close{opacity: 0.35;}
.num.far{opacity: 0.15;}
.num.distant{opacity: 0.1;}
</style>
js代码主要就是控制动画的滚动效果，css用来控制数字的大小等内容。
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