我试图制作一个简单的计时器幻灯片。基本上,图像仅在一定的秒数内可见(比方说5)并切换到另一个图像,然后重复。 我已经搜索了它,但似乎无法让它为我工作。 任何帮助都会很棒
这是我到目前为止所尝试的内容。我尝试了两个淡入的图像,但问题是它们没有重叠。一个在另一个之上,并且淡化动画有效,但它们都在同一时间淡出,而不是一个淡入另一个图像。
<style>
@keyframes cf3FadeInOut {
0% {opacity:1;}
45% {opacity:1;}
55% {opacity:0;}
100% {opacity:0;}
}
#cf {
animation-name: cf3FadeInOut;
animation-timing-function: ease-in-out;
animation-iteration-count: infinite;
animation-duration: 10s;
animation-direction: alternate;
}
</style>
<div id="cf">
<img class="bottom" src="12289696_1526730367649084_3157113004361281453_n.jpg" />
<img class="top" src="11406788_1433347623654026_6824927253890240539_n.jpg" />
</div>
答案 0 :(得分:1)
有2张图片,你可以用CSS动画以低成本做点什么:
@keyframes cf {
50% {/* at 50%, it avoids alternate mode */
opacity: 0;
}
}
#cf {/* same size as image */
height: 300px;
width: 200px;
margin:auto;
}
#cf img {
position: absolute;/* lets stack them */
}
#cf .top {
animation: cf 10s infinite; /* let it run for ever */
}
<div id="cf">
<img class="bottom" src="http://lorempixel.com/200/300/people/3" />
<img class="top" src="http://lorempixel.com/200/300/people/4" />
</div>
答案 1 :(得分:0)
对于HTML和CSS(不带javascript)可能会使用动画css3属性。 例如3张幻灯片:
HTML - 首先声明img用于加载(用于平滑动画)
<img class="for_load" src="http://lorempixel.com/400/200/">
<img class="for_load" src="http://lorempixel.com/400/201/">
<img class="for_load" src="http://lorempixel.com/400/202/">
CSS:
body{
background:no-repeat;
-webkit-animation:animation 10s infinite;
-moz-animation:animation 10s infinite;
animation:animation 10s infinite;
-webkit-animation-timing-function:linear;
-moz-animation-timing-function:linear;
animation-timing-function:linear;
}
.for_load{
width:1px;
height:1px;
position:absolute;
left:-1px;
top:-1Px;
}
@-moz-keyframes animation{
0%{
background-image:url(http://lorempixel.com/400/200/);
}
30%{
background-image:url(http://lorempixel.com/400/200/);
}
33%{
background-image:url(http://lorempixel.com/400/201/);
}
63%{
background-image:url(http://lorempixel.com/400/201/);
}
66%{
background-image:url(http://lorempixel.com/400/202/);
}
97%{
background-image:url(http://lorempixel.com/400/202/);
}
100%{
background-image:url(http://lorempixel.com/400/200/);
}
}
@-webkit-keyframes animation{
0%{
background-image:url(http://lorempixel.com/400/200/);
}
30%{
background-image:url(http://lorempixel.com/400/200/);
}
33%{
background-image:url(http://lorempixel.com/400/201/);
}
63%{
background-image:url(http://lorempixel.com/400/201/);
}
66%{
background-image:url(http://lorempixel.com/400/202/);
}
97%{
background-image:url(http://lorempixel.com/400/202/);
}
100%{
background-image:url(http://lorempixel.com/400/200/);
}
}
@keyframes animation{
0%{
background-image:url(http://lorempixel.com/400/200/);
}
30%{
background-image:url(http://lorempixel.com/400/200/);
}
33%{
background-image:url(http://lorempixel.com/400/201/);
}
63%{
background-image:url(http://lorempixel.com/400/201/);
}
66%{
background-image:url(http://lorempixel.com/400/202/);
}
97%{
background-image:url(http://lorempixel.com/400/202/);
}
100%{
background-image:url(http://lorempixel.com/400/200/);
}
}