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javascript - 为具有平滑颜色过渡的滚动云添加昼夜循环

转载 作者：太空狗 更新时间：2023-10-29 13:15:19 24 4
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我有滚动的云，但我需要通过检测系统时钟来进行黎明/黄昏和昼/夜循环。我不确定如何使用 html 或 css 检测系统时间。

我尝试过延迟转换，但它不起作用。

* {
  margin: 0;
  padding: 0;
}
body {
  overflow: hidden;
}
#clouds {
  padding: 100px 0;
  background: #c9dbe9;
  background: -webkit-linear-gradient(top, #c9dbe9 0%, #fff 100%);
  background: -linear-gradient(top, #c9dbe9 0%, #fff 100%);
  background: -moz-linear-gradient(top, #c9dbe9 0%, #fff 100%);
}
.cloud {
  width: 200px;
  height: 60px;
  background-color: #fff;
  border-radius: 200px;
  -moz-border-radius: 200px;
  -webkit-border-radius: 200px;
  position: relative;
}
.cloud:before,
.cloud:after {
  content: '';
  position: absolute;
  background: #fff;
  width: 100px;
  height: 80px;
  position: absolute;
  top: -15px;
  left: 10px;
  border-radius: 100px;
  -moz-border-radius: 100px;
  -webkit-border-radius: 100px;
  -webkit-transform: rotate(30deg);
  transform: rotate(30deg);
  -moz-transform: rotate(30deg);
}
.cloud:after {
  width: 120px;
  height: 120px;
  top: -55px;
  left: auto;
  right: 15px;
}
.x1 {
  left: -250px;
  -webkit-transform: scale(0.4);
  -moz-transform: scale(0.4);
  transform: scale(0.4);
  -webkit-animation: moveclouds 120s linear infinite;
  -moz-animation: moveclouds 120s linear infinite;
  -o-animation: moveclouds 120s linear infinite;
}
.x2 {
  right: 70px;
  top: -100px;
  -webkit-transform: scale(0.5);
  -moz-transform: scale(0.5);
  transform: scale(0.5);
  opacity: 0.7;
  -webkit-animation: moveclouds 140s linear infinite;
  -moz-animation: moveclouds 140s linear infinite;
  -o-animation: moveclouds 140s linear infinite;
}
.x3 {
  left: -550px;
  top: -200px;
  -webkit-transform: scale(0.4);
  -moz-transform: scale(0.4);
  transform: scale(0.4);
  opacity: 0.8;
  -webkit-animation: moveclouds 150s linear infinite;
  -moz-animation: moveclouds 150s linear infinite;
  -o-animation: moveclouds 150s linear infinite;
}
.x4 {
  left: 400px;
  top: -250px;
  -webkit-transform: scale(0.6);
  -moz-transform: scale(0.6);
  transform: scale(0.6);
  opacity: 0.75;
  -webkit-animation: moveclouds 100s linear infinite;
  -moz-animation: moveclouds 100s linear infinite;
  -o-animation: moveclouds 100s linear infinite;
}
.x5 {
  left: -750px;
  top: -250px;
  -webkit-transform: scale(0.47);
  -moz-transform: scale(0.47);
  transform: scale(0.47);
  opacity: 0.8;
  -webkit-animation: moveclouds 110s linear infinite;
  -moz-animation: moveclouds 110s linear infinite;
  -o-animation: moveclouds 110s linear infinite;
}
@-webkit-keyframes moveclouds {
  0% {
    margin-left: 1000px;
  }
  100% {
    margin-left: -1000px;
  }
}
@-moz-keyframes moveclouds {
  0% {
    margin-left: 1000px;
  }
  100% {
    margin-left: -1000px;
  }
}
@-o-keyframes moveclouds {
  0% {
    margin-left: 1000px;
  }
  100% {
    margin-left: -1000px;
  }
}
<div id="clouds">
  <div class="cloud x1"></div>
  <div class="cloud x2"></div>
  <div class="cloud x3"></div>
  <div class="cloud x4"></div>
  <div class="cloud x5"></div>
</div>

我要实现的目标:

下午 5.30(在本地系统上):从#c9dbe9 过渡到#E0DE3F

下午 6.30:从#E0DE3F 过渡到#323232

凌晨 5.30:从#323232 过渡到#E0DE3F

早上 7 点:从#E0DE3F 过渡到#c9dbe9

请查看上面的演示，非常感谢类似的演示，检测系统时间的单个转换就足够了，我会处理剩下的。

另外，是否可以在所有的云都飘过屏幕之前再次循环播放云动画？动画会等到所有的云彩都飘过屏幕，然后再重新开始。

最佳答案

试试这个

var dt=new Date();
var h=dt.getHours();
var m=dt.getMinutes();
var time=h+':'+m
if(h == 17){
    if(m > 30){
    $('#clouds').css({
        background:'-webkit-linear-gradient(top,  #E0DE3F 0%, #fff 100%)'
    })
}
}
else if(h > 17){
    $('#clouds').css({
        background:'-webkit-linear-gradient(top,  #E0DE3F 0%, #fff 100%)'
    })
}
else if(h == 18){
    if(m > 30 ){
    $('#clouds').css({
        background:'-webkit-linear-gradient(top,  #323232 0%, #fff 100%)'
    })
}
}
else if(h > 18){
     $('#clouds').css({
        background:'-webkit-linear-gradient(top,  #323232 0%, #fff 100%)'
    })
}
else if(h == 5){
    if(m >= 30){
    $('#clouds').css({
        background:'-webkit-linear-gradient(top,  #E0DE3F 0%, #fff 100%)'
    })
}
}
else if(h > 5 && h < 17){
    $('#clouds').css({
        background:'-webkit-linear-gradient(top,  #E0DE3F 0%, #fff 100%)'
    })
}
else if(h == 6){
    if(m >= 30){
    $('#clouds').css({
        background:'-webkit-linear-gradient(top,   #c9dbe9 0%, #fff 100%)'
    })

    }
}
else if(h >6 && h < 17){
    $('#clouds').css({
        background:'-webkit-linear-gradient(top,   #c9dbe9 0%, #fff 100%)'
    })
}
    
*{ margin: 0; padding: 0;}

body {
	overflow: hidden;
}

#clouds{
	padding: 100px 0;
	background: #c9dbe9;
	background: -webkit-linear-gradient(top, #c9dbe9 0%, #fff 100%);
	background: -linear-gradient(top, #c9dbe9 0%, #fff 100%);
	background: -moz-linear-gradient(top, #c9dbe9 0%, #fff 100%);
}

.cloud {
	width: 200px; height: 60px;
	background-color: #fff;
	
	border-radius: 200px;
	-moz-border-radius: 200px;
	-webkit-border-radius: 200px;
	
	position: relative; 
}

.cloud:before, .cloud:after {
	content: '';
	position: absolute; 
	background: #fff;
	width: 100px; height: 80px;
	position: absolute; top: -15px; left: 10px;
	
	border-radius: 100px;
	-moz-border-radius: 100px;
	-webkit-border-radius: 100px;
	
	-webkit-transform: rotate(30deg);
	transform: rotate(30deg);
	-moz-transform: rotate(30deg);
}

.cloud:after {
	width: 120px; height: 120px;
	top: -55px; left: auto; right: 15px;
}

.x1 {
	left: -250px;

 	-webkit-transform: scale(0.4);
	-moz-transform: scale(0.4);
	transform: scale(0.4);

	-webkit-animation: moveclouds 120s linear infinite;
	-moz-animation: moveclouds 120s linear infinite;
	-o-animation: moveclouds 120s linear infinite;
}


.x2 {
	right:70px; top:-100px;
	
 	-webkit-transform: scale(0.5);
	-moz-transform: scale(0.5);
	transform: scale(0.5);
	opacity: 0.7; 	

	-webkit-animation: moveclouds 140s linear infinite;
	-moz-animation: moveclouds 140s linear infinite;
	-o-animation: moveclouds 140s linear infinite;
}

.x3 {
	left: -550px; top: -200px;
	
	-webkit-transform: scale(0.4);
	-moz-transform: scale(0.4);
	transform: scale(0.4);
	opacity: 0.8; 
	
	-webkit-animation: moveclouds 150s linear infinite;
	-moz-animation: moveclouds 150s linear infinite;
	-o-animation: moveclouds 150s linear infinite;
}

.x4 {
	left: 400px; top: -250px;
	
	-webkit-transform: scale(0.6);
	-moz-transform: scale(0.6);
	transform: scale(0.6);
	opacity: 0.75;
	
	-webkit-animation: moveclouds 100s linear infinite;
	-moz-animation: moveclouds 100s linear infinite;
	-o-animation: moveclouds 100s linear infinite;
}

.x5 {
	left: -750px; top: -250px;
	
	-webkit-transform: scale(0.47);
	-moz-transform: scale(0.47);
	transform: scale(0.47);
	opacity: 0.8;
	
	-webkit-animation: moveclouds 110s linear infinite;
	-moz-animation: moveclouds 110s linear infinite;
	-o-animation: moveclouds 110s linear infinite;
}

@-webkit-keyframes moveclouds {
	0% {margin-left: 1000px;}
	100% {margin-left: -1000px;}
}
@-moz-keyframes moveclouds {
	0% {margin-left: 1000px;}
	100% {margin-left: -1000px;}
}
@-o-keyframes moveclouds {
	0% {margin-left: 1000px;}
	100% {margin-left: -1000px;}
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="clouds">
	<div class="cloud x1"></div>
	<div class="cloud x2"></div>
	<div class="cloud x3"></div>
	<div class="cloud x4"></div>
	<div class="cloud x5"></div>
	</div>

关于javascript - 为具有平滑颜色过渡的滚动云添加昼夜循环，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/30437678/

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