js判断年份是否是闰年代码-html代码-BFW代码库

js判断年份是否是闰年代码

代码语言：html

所属分类：其他

代码描述：js判断年份是否是闰年代码，通过加减来增加减少年份数字。

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en" >

<head>
  <meta charset="UTF-8">

  
  
  <link rel='stylesheet' href='https://fonts.googleapis.com/css2?family=Nabla&amp;display=swap'>
  
<style>
@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&display=swap');
body {
  font-family: "DM Serif Display", serif;
  font-weight: 400;
  font-style: normal;
	overflow-y: hidden;
	background-color: rgb(201, 242, 177);
}
input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button {
	opacity: 0;
}

.container {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	height: 100vh;
}
.inputBox {
	padding: 10px;
	box-shadow: 0 0 30px #99999955;
	border-radius: 10px;
	display: flex;
}
.changersBox {
	display: flex;
	gap: 5px;
	flex-direction: column;
}

#inputYear {
	font-family: "DM Serif Display", serif;
  font-weight: 400;
  font-style: normal;
	font-size: 10rem;
	border: none;
	width: 25rem;
	background: transparent;
}
#inputYear:focus {
	border: none;
	outline: none;
}
#up {
	font-family: "DM Serif Display", serif;
	font-size: 5rem;
	padding-right: 10px;
	padding-left: 10px;
	background-color: rgba(255,255,255,0.1);
	text-align: center;
	cursor: pointer;
	user-select: none;
	filter: drop-shadow(10px 10px 4px #000000aa);
}
#up:hover{
	filter: drop-shadow(0px 0px 4px #000000aa);
}
#down {
	font-family: "DM Serif Display", serif;
	font-size: 5rem;
	padding-right: 10px;
	padding-left: 10px;
	background-color: rgba(255,255,255,0.1);
	text-align: center;
	cursor: pointer;
	user-select: none;
	filter: drop-shadow(10px 10px 4px #000000aa);
}
#down:hover{
	filter: drop-shadow(0px 0px 4px #000000aa);
}
#output {
	font-size: 5rem;
	max-width: 95vw;
}

.transformHolder {
	font-family: "DM Serif Display", serif;
	font-size: 3rem;
	height: 50px;
	width: 50px;
	background: rgba(100, 200, 100,0.3);
	text-align: center;
	display: flex;
	align-items: center;
	justify-content: center;
	border-radius: 65px;
	margin: 5px;
}

.circle {
	font-family: "DM Serif Display", serif;
	font-size: 3rem;
	height: 25px;
	width: 25px;
	background: rgba(100, 200, 100,0.3);
	text-align: center;
	display: flex;
	align-items: center;
	justify-content: center;
	border-radius: 65px;
}

.transformContainer {
	display: flex;
	flex-direction: row;
}
</style>


  
  
</head>

<body translate="no">
  <div class="container">
	<div class="inputBox">
		<input type="number" value="2024" id="inputYear">
		<div class="changersBox">
			<div id="up">+</div>
			<div id="down">-</div>
		</div>
	</div>
	<div id="output">Is a Leap Year</div>
	<div class="transformContainer">
		<div class="transformHolder">
			<div class="circle"></div>
		</div>
.........完整代码请登录后点击上方下载按钮下载查看