优化简单的jQuery图像轮播

时间:2010-08-21 10:18:06

标签: jquery html5 carousel

我需要在我的网站上循环浏览4个图像,我不想在网站上添加另一个插件,所以我创建了自己的简单轮播(下面是html,css和js)

我的问题是,仅仅从查看此代码,是否有一个明显更简单/更好的方法来做到这一点?

HTML:

<section id="carousel">
    <img src="images/image_00.jpg" width="202" height="162" />
</section>

的CSS:

#carousel{text-align:center;position:relative;}
#carousel img{top:0;left:0;z-index:1;position:absolute;}

JS:

function carousel(el, base_url, images, i){
    if (i == images.length ) i = 0;
    var el2 = $(el).clone();
    $(el).css('z-index', '1');
    el2.css('z-index', '0');
    el2.attr('src', base_url + images[i]);
    $(el).after(el2);
    $(el).fadeOut('slow', function(){
        $(this).remove();
    });
    i++;
    var func = function(){return carousel(el, base_url, images, i);};
    window.timer = setTimeout(func, 4000);
}
$(document).ready(function(){
    carousel('#carousel img:first',
             'images/', 
             ['image_00.jpg',
              'image_01.jpg',
              'image_02.jpg',
              'image_03.jpg'], 
             0);
});

1 个答案:

答案 0 :(得分:0)

这是我的优化版本......

HTML

<!-- "section" is not valid HTML -->
<div id="carousel">
         <img src="images/01.jpg" width="202" height="162" />
</div>

CSS

/* Same as before */
#carousel{text-align:center;position:relative;}
#carousel img{top:0;left:0;z-index:1;position:absolute;}

的Javascript

function carousel(el, base, images, i){
    //Made the "i" parameter optional
    if (i == images.length || i == null) i = 0;
    //Put the variables in a better order
    var el2 = $(el).clone();
    el2.attr('src', base + images[i]);
    el2.css('z-index', '0');
    $(el).css('z-index', '1');
    $(el).after(el2);
    //One line...
    $(el).fadeOut('slow', function(){$(this).remove();});
    i++;
    //The function doesn't have to be in a variable
    window.timer = setTimeout(function(){return carousel(el, base, images, i);}, 4000);
}

$(function($){
    //Didn't include "i" variable
    carousel('#carousel img:first',
             'images/', 
             ['01.jpg',
              '02.jpg',
              '03.jpg',
              '04.jpg']);
});