从背景图像渐隐到悬停

Question

我想将我的第一个背景图像淡化为应该用于悬停的图像，然后在用户移开鼠标后再次将其关闭。 可以使用jQuery。

这是我到目前为止的内容：

    <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>

哎呀，格式化不正确...

Answer 1

我在jsbin中放了一个好的开始 。 我只是将新闻图标作为演示进行了布线。 它不是防弹的，因为在过渡完成之前离开元素会使元素处于错误状态，但是我不知道该如何立即解决。 对于这项工作，jquery可能具有比fadeOut/fadeIn更好的方法。 另外，您还需要:active背景! important ! important以便在单击时始终可以看到图像，在保存之前我忘记这样做了。

同样，您也不能在<li>元素之外悬挂<a>元素。 使链接display:block使它们占据列表项内的空白，然后您就可以将hacky onclick="window.location..."当作垃圾。

Answer 2

@猎人

这无视褪色的欲望。

$('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);
    }
    });




  });

这或多或少给了大局。 未经测试或证明。 如果您试一下并将其放到jfiddle上，我会帮助您解决的。 您还需要制作一个.mouseleave()函数