css+js实现步进数值选择器效果代码-html代码-BFW代码库

代码语言：html

所属分类：选择器

代码描述：css+js实现步进数值选择器效果代码

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

<html>

<head>
    <style>
        * {
        	border: 0;
        	box-sizing: border-box;
        	margin: 0;
        	padding: 0;
        }
        :root {
        	--hue: 223;
        	--bg: hsl(var(--hue),10%,90%);
        	--fg: hsl(var(--hue),10%,10%);
        	font-size: calc(20px + (30 - 20) * (100vw - 320px) / (1280 - 320));
        }
        body, button {
        	font: 1em/1.5 Inter, sans-serif;
        }
        body {
        	background-color:#fe6262;
        	color: var(--fg);
        	height: 100vh;
        	display: grid;
        	place-items: center;
        	transition: background-color 0.3s;
        }
        
        .stepper {
        	background-color: var(--fg);
        	border-radius: 1em;
        	box-shadow: 0 0.75em 1em hsla(0,0%,0%,0.2);
        	color: var(--bg);
        	font-weight: bold;
        	overflow: hidden;
        	padding: 0.75em 0.375em;
        	position: relative;
        	width: 6em;
        	height: 3em;
        	transition:
        		background-color 0.3s,
        		color 0.3s,
        		transform 0.15s ease-in-out;
        	-webkit-appearance: none;
        	appearance: none;
        	-webkit-tap-highlight-color: #0000;
        }
        .stepper:active {
        	transform: scale(0.95);
        	transition-delay: 0s, 0s, 0.15s;
        }
        .stepper__btn-area,
        .stepper__btn-area:before,
        .stepper__btn-click,
        .stepper__value {
        	position: absolute;
        }
        .stepper__btn-area,
        .stepper__btn-area:before,
        .stepper__btn-click {
        	display: block;
        	top: 0;
        	left: 0;
        }
        .stepper__btn-area {
        	width: 2em;
        	height: 3em;
        }
        .stepper__btn-area + .stepper__btn-area {
        	right: 0;
        	left: auto;
        }
        .stepper__btn-area:before {
        	border-radius: 50%;
        	box-shadow: 0 0 0 0 var(--bg) inset;
        	content: "";
        	opacity: 0;
        	pointer-events: none;
        	top: 0.5em;
        	width: 2em;
        	height: 2em;
        	transform: scale(2.5);
        	transition: all 0.4s ease-out;
        }
        .stepper__btn-area:not(:disabled):active:before {
        	box-shadow: 0 0 0 1em var(--bg) inset;
        	opacity: 0.25;
        	transform: scale(1);
        	transition:
        		opacity 0.2s ease-out,
        		transform 0.2s ease-out;
        }
        .stepper__btn-click {
        	width: 100%;
        	height: 100%;
        }
        .stepper__value {
        	animation-duration: 0.3s;
        	animation-timing-function: ease-in-out;
        	display: inline-block;
        	font-size: 1.5em;
        	line-height: 1;
        	top: calc(50% - 0.75rem);
        	left: calc(50% - 1rem);
        	text-align: center;
        	width: 2rem;
        	height: 1.5rem;
        	-webkit-user-select: none;
        	user-select: none;
        }
        .stepper__value[data-pos="off-left"],
        .stepper__value[data-pos="prev"],
        .stepper__value[data-pos="next"],
        .stepper__value[data-pos="off-right"] {
        	opacity: 0.5;
        }
        .stepper__value[data-pos="off-left"] {
        	transform: translateX(-2.67em) scale(0.5);
        }
        .stepper__value[data-pos="prev"] {
        	transform: translateX(-1.33em) scale(0.5);
        }
        .stepper__value[data-pos="cur"] {
        	transform: translateX(0);
        }
        .stepper__value[data-pos="next"] {
        	transform: translateX(1.33em) scale(0.5);
        }
        .stepper__value[data-pos="off-right"] {
        	transform: translateX(2.67em) scale(0.5);
        }
        .stepper--move-left .stepper__value[data-pos="off-left"] {
        	animation-name: moveOffLeft;
        }
        .stepper--move-left .stepper__value[data-pos="prev"] {
        	animation-name: middleToLeft;
        }
        .stepper--move-left .stepper__value[data-pos="cur"] {
        	animation-name: rightToMiddle;
        }
        .stepper--move-left .stepper__value[data-pos="next"] {
        	animation-name: comeInRight;
        }
        .stepper--move-right .stepper__value[data-pos="prev"] {
        	animation-name: comeInLeft
        }
        .stepper--move-right .stepper__value[data-pos="cur"] {
        	animation-name: leftToMiddle
        }
        .stepper--move-right .stepper__value[data-pos="next"] {
        	animation-name: middleToRight;
        }
        .stepper--move-right .stepper__value[data-pos="off-right"] {
        	animation-name: moveOffRight;
        }
        
        /* Dark theme */
        @media (prefers-color-scheme: dark) {
        	:root {
        		--bg: hsl(var(--hue),10%,20%);
        		--fg: hsl(var(--hue),10%,90%);
        	}
        }
        
        /* Animations */
        @keyframes comeInRight {
        	from {
        		transform: translateX(2.67em) scale(0.5);
        	}
        	to {
        		transform: translateX(1.33em) scale(0.5);
        	}
        }
        @keyframes rightToMiddle {
        	from {
        		opacity: 0.5;
        		transform: translateX(1.33em) scale(0.5);
        	}
        	to {
        		opacity: 1;
        		transform: translateX(0) scale(1);
        	}
        }
        @keyframes middleToLeft {
        	from {
        		opacity: 1;
        		transform: translateX(0) scale(1);
        	}
        	to {
        		opacity: 0.5;
        		transform: translateX(-1.33em) scale(0.5);
        	}
        }
        @keyframes moveOffLeft {
        	from {
        		transform: translateX(-1.33em) scale(0.5);
        	}
        	to {
        		transform: translateX(-2.67em) scale(0.5);
        	}
        }
        @keyframes comeInLeft {
        	from {
        		transform: translate.........完整代码请登录后点击上方下载按钮下载查看