HTML+JS implements a clock with rolling numbers

This time I will bring you HTML JS to implement a rolling digital clock. What are the precautions for implementing a rolling digital clock in HTML JS? The following is a practical case, let's take a look.

The following is the entire code of this rolling clock animation:

nbsp;html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">


<meta>
<title>CSS3+JS滚动数字时钟代码-脚本之家</title>
<style>
body{text-align: center;background-color: #0e141b;color: rgba(224, 230, 235, 0.89);font-family: &#39;Roboto Condensed&#39;, 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: &#39;:&#39;;}
.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>


<p>
 </p><p>0</p>
 <p>1</p>
 <p>2</p>

<p>
 </p><p>0</p>
 <p>1</p>
 <p>2</p>
 <p>3</p>
 <p>4</p>
 <p>5</p>
 <p>6</p>
 <p>7</p>
 <p>8</p>
 <p>9</p>

<p></p>
<p>
 </p><p>0</p>
 <p>1</p>
 <p>2</p>
 <p>3</p>
 <p>4</p>
 <p>5</p>

<p>
 </p><p>0</p>
 <p>1</p>
 <p>2</p>
 <p>3</p>
 <p>4</p>
 <p>5</p>
 <p>6</p>
 <p>7</p>
 <p>8</p>
 <p>9</p>

<p></p>
<p>
 </p><p>0</p>
 <p>1</p>
 <p>2</p>
 <p>3</p>
 <p>4</p>
 <p>5</p>

<p>
 </p><p>0</p>
 <p>1</p>
 <p>2</p>
 <p>3</p>
 <p>4</p>
 <p>5</p>
 <p>6</p>
 <p>7</p>
 <p>8</p>
 <p>9</p>

<script>
&#39;use strict&#39;;
var size = 86;
var columns = Array.from(document.getElementsByClassName(&#39;column&#39;));
var d = undefined,
 c = undefined;
var classList = [&#39;visible&#39;, &#39;close&#39;, &#39;far&#39;, &#39;far&#39;, &#39;distant&#39;, &#39;distant&#39;];
var use24HourClock = true;
function padClock(p, n) {
	return p + (&#39;0&#39; + n).slice(-2);
}
function getClock() {
	d = new Date();
	return [use24HourClock ? d.getHours() : d.getHours() % 12 || 12, d.getMinutes(), d.getSeconds()].reduce(padClock, &#39;&#39;);
}
function getClass(n, i2) {
	return classList.find(function (class_, classIndex) {
		return i2 - classIndex === n || i2 + classIndex === n;
	}) || &#39;&#39;;
}
var loop = setInterval(function () {
	c = getClock();
	columns.forEach(function (ele, i) {
		var n = +c[i];
		var offset = -n * size;
		ele.style.transform = &#39;translateY(calc(50vh + &#39; + offset + &#39;px - &#39; + size / 2 + &#39;px))&#39;;
		Array.from(ele.children).forEach(function (ele2, i2) {
			ele2.className = &#39;num &#39; + getClass(n, i2);
		});
	});
}, 200 + Math.E * 10);
</script>

Note: The top one is the CSS style content, where you can adjust the color, font, etc.

<style>
body{text-align: center;background-color: #0e141b;color: rgba(224, 230, 235, 0.89);font-family: &#39;Roboto Condensed&#39;, 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: &#39;:&#39;;}
.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 code is mainly used to control the scrolling effect of animation, and CSS is used to control the size of numbers and other content.

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

Recommended reading:

How to make the image float in the center in JS

JS implements label scrolling switching

JS implements mouse following special effects

The above is the detailed content of HTML+JS implements a clock with rolling numbers. For more information, please follow other related articles on the PHP Chinese website!