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javascript - 滑动横幅 90% HTML+CSS3 10% JS

转载 作者:行者123 更新时间:2023-11-28 18:46:30 24 4
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我制作了一个脚本,使用 CSS3 在屏幕上滑动图像(进出)。当最后一个动画结束时,我找不到让 CSS 开始新动画的方法,而且 CSS 动画不允许更改背景图像(我试过了)。所以我不得不使用一点 javascript 来切换类名,这样图像就会改变。然而,这不是最好的解决方案,因为它有可能会不同步。除此之外,它违背了拥有纯 CSS3 动画的目的。

问:有没有一种方法可以减少 javascript(不混淆代码)或完全不用 javascript 来做到这一点?

来源


/  
/index.html
/scripts/slider.css
/scripts/slider.js
/img/layout/banner1.png
/img/layout/banner2.png
/img/layout/banner3.png

slider .css

.main {
position: absolute;
top: 0px;
left: 0px;
z-index: 100;
width: 100%;
height: 100%; /* if there is no content you need this to show something */
background-repeat: no-repeat;
background-position: center 50%;
animation-name: slideInOut;
animation-duration: 8s;
animation-delay: 0s;
animation-timing-function: ease-out;
animation-iteration-count: infinite;
animation-direction: normal;
-moz-animation-name: slideInOut;
-moz-animation-duration: 8s;
-moz-animation-delay: 0s;
-moz-animation-timing-function: ease-out;
-moz-animation-iteration-count: infinite;
-moz-animation-direction: normal;
-webkit-animation-name: slideInOut;
-webkit-animation-duration: 8s;
-webkit-animation-delay: 0s;
-webkit-animation-timing-function: ease-out;
-webkit-animation-iteration-count: infinite;
-webkit-animation-direction: normal;
-o-animation-name: slideInOut;
-o-animation-duration: 8s;
-o-animation-delay: 0s;
-o-animation-timing-function: ease-out;
-o-animation-iteration-count: infinite;
-o-animation-direction: normal;
}
.main.m1 {
background-image: url("../img/layout/banner1.png");
}
.main.m2 {
background-image: url("../img/layout/banner2.png");
}
.main.m3 {
background-image: url("../img/layout/banner3.png");
}
@keyframes slideInOut {
0% { background-position: 1600px 50%; }
15% { background-position: center 50%; }
80% { background-position: center 50%; }
100% { background-position: -1600px 50%; }
}
@-moz-keyframes slideInOut {
0% { background-position: 1600px 50%; }
15% { background-position: center 50%; }
80% { background-position: center 50%; }
100% { background-position: -1600px 50%; }
}
@-webkit-keyframes slideInOut {
0% { background-position: 1600px 50%; }
15% { background-position: center 50%; }
80% { background-position: center 50%; }
100% { background-position: -1600px 50%; }
}
@-o-keyframes slideInOut {
0% { background-position: 1600px 50%; }
15% { background-position: center 50%; }
80% { background-position: center 50%; }
100% { background-position: -1600px 50%; }
}

slider .js

function startSlider() {
var main = document.getElementById("main");
var cArr = ["main m1","main m2","main m3"];
var ntot = cArr.length;
var npos = 0;
setInterval(function() {
main.className = cArr[npos++];
if (npos == ntot) npos = 0;
}, 8000);
}

index.html

<link rel="StyleSheet" href="scripts/slider.css"/>
<script type="text/javascript" src="scripts/slider.js"/>
<body onload="startSlider();">
<div id="main" class="main m3"></div>

统计

*------------------------------------------*
| | Chars (no spaces) | % total |
|------------|-------------------|---------|
| javascript | 210 | 9.95% |
| html+css3 | 165+1735 | 90.05% |
*------------------------------------------*
| total | 2110 | 100.00% |
*------------------------------------------*

最佳答案

setInterval(function() {
main.className = cArr[npos=++npos%ntot];
}, 8000);

关于javascript - 滑动横幅 90% HTML+CSS3 10% JS,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/10472741/

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