我需要为我的幻灯片创建一个if语句,如果只有一个图像我不想让幻灯片显示活动;
使用Javascript:
<script type="text/javascript">
function slideSwitch() {
var $active = $('#slideshow IMG.active');
if ( $active.length == 0 ) $active = $('#slideshow IMG:last');
// use this to pull the images in the order they appear in the markup
var $next = $active.next().length ? $active.next()
: $('#slideshow IMG:first');
// uncomment the 3 lines below to pull the images in random order
// var $sibs = $active.siblings();
// var rndNum = Math.floor(Math.random() * $sibs.length );
// var $next = $( $sibs[ rndNum ] );
$active.addClass('last-active');
$next.css({opacity: 0.0})
.addClass('active')
.animate({opacity: 1.0}, 1000, function() {
$active.removeClass('active last-active');
});
}
$(function() {
setInterval( "slideSwitch()", 5000 );
});
</script>
HTML:
<div id="slideshow">
<img src="image1.jpg" class="active" />
JS并不是我的强项,任何帮助都会很棒!
答案 0 :(得分:1)
将您的domready
功能更改为:
$(function() {
if ($("#slideshow img").length > 1) {
setInterval( "slideSwitch()", 5000 );
}
});