从背景图像淡入淡出到悬停

Question

我想将我的第一个背景图像淡化为应该在悬停时使用的背景图像，然后在用户移开鼠标后再次关闭。可以使用jQuery。

这是我到目前为止所得到的：

    <ul style="top: -70px; display: block; padding-left: 205px;" id="cats-menu" class="nav superfish sf-js-enabled">
    <a href="http://www.ballpointtech.com/category/guides/"></a><li id="li_guides" onclick="window.location = 'http://www.ballpointtech.com/category/guides/';"><a href="http://www.ballpointtech.com/category/guides/"> </a></li>

    <a href="http://www.ballpointtech.com/category/news/"></a><li id="li_news" onclick="window.location = 'http://www.ballpointtech.com/category/news/';"><a href="http://www.ballpointtech.com/category/news/"> </a></li>
    <a href="http://www.ballpointtech.com/category/reviews/"></a><li id="li_reviews" onclick="window.location = 'http://www.ballpointtech.com/category/reviews/';"><a href="http://www.ballpointtech.com/category/reviews/"> </a></li>
    <a href="http://www.ballpointtech.com/category/tipstricks/"></a><li id="li_tipstricks" onclick="window.location = 'http://www.ballpointtech.com/category/tipstricks/';"><a href="http://www.ballpointtech.com/category/tipstricks/"> </a></li>
</ul>

    <style type="text/css">
    #li_guides {
        background-image:url('http://www.ballpointtech.com/wp-content/uploads/2010/09/Guides-Still1.png');
        width:130px;
        height:92px;    
}
    #li_guides:hover {
        background-image:url('http://www.ballpointtech.com/wp-content/uploads/2010/09/Guides-Rollover1.png');
    }
#li_guides:active {
        background-image:url('http://www.ballpointtech.com/wp-content/uploads/2010/09/Guides-Click2.png');
    }
#li_reviews {
        background-image:url('http://www.ballpointtech.com/wp-content/uploads/2010/09/Reviews-Still.png');
        width:130px;
        height:92px;    
}
    #li_reviews:hover {
        background-image:url('http://www.ballpointtech.com/wp-content/uploads/2010/09/Reviews-Rollover.png');
    }
#li_reviews:active {
        background-image:url('http://www.ballpointtech.com/wp-content/uploads/2010/09/Reviews-Click.png');
    }
#li_news {
        background-image:url('http://www.ballpointtech.com/wp-content/uploads/2010/09/News-Still.png');
        width:130px;
        height:92px;    
}
    #li_news:hover {
        background-image:url('http://www.ballpointtech.com/wp-content/uploads/2010/09/News-Rollover.png');
    }
#li_news:active {
        background-image:url('http://www.ballpointtech.com/wp-content/uploads/2010/09/News-Click.png');
    }
#li_tipstricks {
        background-image:url('http://www.ballpointtech.com/wp-content/uploads/2010/09/tipstricks-still.png');
        width:130px;
        height:92px;    
}
    #li_tipstricks:hover {
        background-image:url('http://www.ballpointtech.com/wp-content/uploads/2010/09/tipstricks-rollover.png');
        }
    #li_tipstricks:active {
        background-image:url('http://www.ballpointtech.com/wp-content/uploads/2010/09/tipstricks-click.png');
    }
</style>

啊，无法正确格式化......

Answer 1

@hunter

这是忽略了褪色的愿望。

$('your.item').mouseenter(function(){
     $('your.item').stop().animate({opacity: 0},200,function(){

          $('your.item').attr('src','/new/image.jpg');
          $('your.item').stop().animate({opacity: 1},200);
    }
    });




  });

这或多或少地展示了大局。未经测试或验证。如果你尝试一下并将其放在 jfiddle 上，我会帮助你完成它。您还需要创建一个 .mouseleave() 函数

Answer 2

这是我在 jsbin 中整理的一个好的开始。我只连接了新闻图标作为演示。它并不是万无一失的，因为在转换完成之前离开元素会使元素处于错误的状态，但我不知道如何立即解决这个问题。对于这项工作，jquery 可能有比 fadeOut/fadeIn 更好的方法。此外，您还需要将 :active 背景设置为 ！重要的是，单击时图像始终可见，但我在保存之前忘记了这样做。

另外，您不能将 元素挂在

元素之外。创建链接 display:block ，这样它们就会占据列表项内的空白空间，然后您就可以废弃这个 hacky onclick="window.location..." 了。