從背景圖像漸隱到懸停

Question

我想將我的第一個背景圖像淡化為應該用於懸停的圖像，然后在用戶移開鼠標后再次將其關閉。 可以使用jQuery。

這是我到目前為止的內容：

    <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，格式化不正確...

Answer 1

我在jsbin中放了一個好的開始 。 我只是將新聞圖標作為演示進行了布線。 它不是防彈的，因為在過渡完成之前離開元素會使元素處於錯誤狀態，但是我不知道該如何立即解決。 對於這項工作，jquery可能具有比fadeOut/fadeIn更好的方法。 另外，您還需要:active背景! important ! important以便在單擊時始終可以看到圖像，在保存之前我忘記這樣做了。

同樣，您也不能在<li>元素之外懸掛<a>元素。 使鏈接display:block使它們占據列表項內的空白，然后您就可以將hacky onclick="window.location..."當作垃圾。

Answer 2

@獵人

這無視褪色的欲望。

$('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);
    }
    });




  });

這或多或少給了大局。 未經測試或證明。 如果您試一下並將其放到jfiddle上，我會幫助您解決的。 您還需要制作一個.mouseleave()函數