虽然 Pierre 的回答以前对我有用,但我最近偶然发现了一个没有用的情况。实现一个简单的循环图像滑块,我使用以下内容。
HTML:
<ul id="slides">
<li class="active">
<img src="/.../0.jpg">
<p>Caption</p>
</li>
<li class="active">
<img src="/.../1.jpg">
<p>Caption</p>
</li>
<!-- and so on -->
</ul>
CSS:
#slides {
position: relative;
}
#slides li {
position: absolute;
top: 0;
display: none;
opacity: 0;
-moz-transition: opacity 1s;
}
#slides li.active {
display: block;
opacity: 1;
}
和 jQuery:
$(function(){
animateSlide();
});
function animateSlide(){
setTimeout(function(){
var current = $('#slides li.active');
var next = current.next();
// If there is no next, use the first li
if(!next.length){
next = $('#slides li:first');
}
// Ensure both are displayed as block, to allow the opacity transition to show
current.add(next).css('display', 'block');
current.removeClass('active');
setTimeout(function(){
next.addClass('active');
setTimeout(function(){
current.css('display', 'none'); // Avoid elements overlapping each other
animateSlide(); // Loop
}, 1000); // The duration of the transition
}, 1); // Workaround for letting the "next" var to render as block properly before applying the class which triggers the transition
}, 6000); // Change image every 6 seconds
}
这在 Safari/Chrome 中效果很好(尽管我承认所有 setTimeouts 有点古怪),但是虽然滑块在技术上可以在 Firefox 中工作,但那里没有可见的过渡。
在Jim Jeffers' answer to a similar problem 之后,我能够让它在 Safari/Chrome 和 Firefox 中顺利运行,并且它还大大清理了我的 javascript。
更新的 CSS:
#slides li {
position: absolute;
top: 0;
height: 0;
opacity: 0;
-moz-transition: opacity 1s;
}
#slides li.active {
height: auto;
opacity: 1;
}
更新 jQuery:
function animateSlide(){
setTimeout(function(){
var current = $('#slides li.active');
var next = current.next();
// If there is no next, use the first li
if(!next.length){
next = $('#slides li:first');
}
current.removeClass('active');
next.addClass('active');
animateSlide(); // Loop
}, 6000); // Change image every 6 seconds
}