Question

我在线阅读了一个教程来构建一个滑块，并让它自己很好地工作。但是，当我从我的文件中取出代码并将它们传输到我想要使用它们的网站时，滑块不起作用。它不会显示字幕或类似内容。

以下是Javascript：

<script src="jquery-1.4.min.js" type="text/javascript" ></script>

<script type="text/javascript">
$(document).ready(function() {      

//Execute the slideShow, set 4 seconds for each images
slideShow(2000);

});

function slideShow(speed) {


    //append a LI item to the UL list for displaying caption
    $('ul.slideshow').append('<li id="slideshow-caption" class="caption"><div     class="slideshow-caption-container"><h3></h3><p></p></div></li>');

//Set the opacity of all images to 0
$('ul.slideshow li').css({opacity: 0.0});

//Get the first image and display it (set it to full opacity)
$('ul.slideshow li:first').css({opacity: 1.0}).addClass('show');

//Get the caption of the first image from REL attribute and display it
$('#slideshow-caption h3').html($('ul.slideshow li.show').find('img').attr('title'));
$('#slideshow-caption p').html($('ul.slideshow li.show').find('img').attr('alt'));

//Display the caption
$('#slideshow-caption').css({opacity: 0.7, bottom:0});

//Call the gallery function to run the slideshow    
var timer = setInterval('gallery()',speed);

//pause the slideshow on mouse over
$('ul.slideshow').hover(
    function () {
        clearInterval(timer);   
    },  
    function () {
        timer = setInterval('gallery()',speed);         
    }
    );

}

function gallery() {


//if no IMGs have the show class, grab the first image
var current = ($('ul.slideshow li.show')?  $('ul.slideshow li.show') : $('#ul.slideshow li:first'));

//trying to avoid speed issue
if(current.queue('fx').length == 0) {

    //Get next image, if it reached the end of the slideshow, rotate it back to the first image
    var next = ((current.next().length) ? ((current.next().attr('id') == 'slideshow-caption')? $('ul.slideshow li:first') :current.next()) : $('ul.slideshow li:first'));

    //Get next image caption
    var title = next.find('img').attr('title'); 
    var desc = next.find('img').attr('alt');    

    //Set the fade in effect for the next image, show class has higher z-index
    next.css({opacity: 0.0}).addClass('show').animate({opacity: 1.0}, 1000);

    //Hide the caption first, and then set and display the caption
    $('#slideshow-caption').slideToggle(300, function () { 
        $('#slideshow-caption h3').html(title); 
        $('#slideshow-caption p').html(desc); 
        $('#slideshow-caption').slideToggle(500); 
    }); 

    //Hide the current image
    current.animate({opacity: 0.0}, 1000).removeClass('show');

    }

}
</script>

以下是HTML代码

<div id="masthead-wrapper">
    <div id="masthead"></div>
</div>
<div id="navbar-wrapper">
<div id="navbar-left"></div>
<div id="navbar">
    <ul class="nav">
        <li class="navitem"><a href="#">HOME</a></li>
        <li class="navitem"><a href="#">OUR STORY</a></li>
        <li class="navitem"><a href="#">CATERING</a></li>
        <li class="navitem"><a href="#">WHOLESALE</a></li>
        <li class="navitem"><a href="#">CONTACT US</a></li>
    </ul>
</div>
<div id="navbar-right"></div><!-- END NAVIGATION -->
</div>
<div style="clear:both;"></div>
<div id="main-wrapper">
    <div id="main">

        <div id="content">
            <!-- SLIDER -->
            <div id="slider-container">

            <ul class="slideshow">
                <li class="show"><a href="#"><img src="slide-1.jpg" width="618" height="246" title="Delicious Desserts" alt="something funny." /></a></li>
                <li><a href="#"><img src="slide-2.jpg" width="618" height="246" title="Slide 2" alt="Something funny." /></a></li>
                <li><a href="#"><img src="slide-3.jpg" width="618" height="246" title="Slide 3" alt="Something funny." /></a></li>
            </ul>
            </div>

            <!-- END SLIDER -->
        </div><!-- END CONTENT -->
    </div><!-- END MAIN -->
</div><!-- END MAIN WRAPPER -->

<div id="footerwrapper">
<div id="footer"></div>
</div>

最后，CSS

ul.slideshow {
list-style:none; 
width:618px;
height:246px;
overflow:hidden;
position:relative;
margin:0 auto;
padding:0;

}   

ul.slideshow li {
position:absolute;
left:0;
right:0;
}

ul.slideshow li.show {
z-index:500;    
}

ul img {
border:none;    
}

#slideshow-caption {
width:300px;
height:40px;
position:absolute;
bottom:0;
left:0; 
color:#fff;
background:#000;
z-index:500;
margin-bottom: 20px;
margin-left: 20px;
}

#slideshow-caption .slideshow-caption-container {
padding:5px 10px;   
z-index:1000;   
}

#slideshow-caption h3 {
margin-top:5px;
margin-bottom: 5px;
margin-left: 10px;
padding:0;  
font-size:18px;
}

#slideshow-caption p {
margin:5px 0 0 0;
padding:0;
}

我觉得有一个非常简单的解决方案，我只是没有得到。有人可以帮我从这里出去吗？非常感谢！

Answer 1

你的问题是这个违规行：

timer = setInterval('gallery()',speed);

应该是：

timer = setInterval(gallery,speed);

这是一个动作的小提琴（没有照片）：

http://jsfiddle.net/cFbAd/2/

这是因为setInterval需要引用函数，而不是字符串。

jQuery Slider不会在这些<div>标签内动画？</div>

1 个答案: