Question

我已经下载了一个图片滑块，但我希望它能够随机显示图像并拥有随机的第一张图像。我将js修改为：

/ 执行slideShow /

slideShow(3000);

/ 功能 /

function slideShow(speed) {

//Generate a random number
var randNum = Math.floor(Math.random() * $('ul.slideshow li').length);

//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:eq('+randNum+')').css({opacity: 1.0});

//Get the caption of the first image from REL attribute and display it
$('#slideshow-caption h3').html($('ul.slideshow a:eq('+randNum+')').find('img').attr('title'));
$('#slideshow-caption p').html($('ul.slideshow a:eq('+randNum+')').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').hoverIntent(
    function () {
        clearInterval(timer);   
        $('#slideshow-caption').animate({height:'65px'},700);
    },  
    function () {
        timer = setInterval('gallery()',speed);
        $('#slideshow-caption').animate({height:'25px'});
    }
    );  
}

function gallery() {

var randNum = Math.floor(Math.random() * $('ul.slideshow li').length);
//if no IMGs have the show class, grab the first image
var current = ($('ul.slideshow li.show')?  $('ul.slideshow li.show') : $('ul.slideshow li:eq('+randNum+')'));

//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}, 2000);

//Hide the caption first, and then set and display the caption
$('#slideshow-caption').slideToggle(600, function () { 
    $('#slideshow-caption h3').html(title); 
    $('#slideshow-caption p').html(desc); 
    $('#slideshow-caption').slideToggle(1000); 
});     

//Hide the current image
current.animate({opacity: 0.0}, 2000).removeClass('show');
}

这是最好的方法吗？还是可以轻松完成？

随机图像滑块

0 个答案: