3

代码已准备好，但我希望图像在鼠标悬停时变为彩色（即删除 IMG 的灰度属性），当鼠标离开时，图像应该再次变为灰度。

如果仅通过 css 是不可能的。javascript 也可以，但请不要使用 jquery，我不知道 jquery。

代码如下：

<style type="text/css">

#ajabox:hover #ajainner{
    height:100px;
    top:-100px;
}

#ajainner{
    width:332px;
    overflow:hidden;
        height:0px;
    background-image:url(../../images/bg_black_50.png);
    position:relative;
    top:-1px;
    transition: top .4s ease-in, height .4s ease-in;
    -ms-transition: top .4s ease-in, height .4s ease-in;
    -webkit-transition: top .4s ease-in, height .4s ease-in;
    -o-transition: top .4s ease-in, height .4s ease-in;
    -moz-transition: top .4s ease-in, height .4s ease-in;
}

#ajabox{
    width:332px;
    margin:0px;
    padding:0px;
    border:0px;
    height:209px
    display:-webkit-box;
    display:box;
    display:-moz-box;
    display:-ms-box;
    display:-o-box;
    overflow:hidden;
}
span{
     color:#FFF; 
     font-family:Verdana, Geneva, sans-serif; 
     left:10px; 
     top:10px; 
     position:relative;
}
img.desaturate { 
    filter: grayscale(100%);
    -webkit-filter: grayscale(100%);
    -moz-filter: grayscale(100%);
    -ms-filter: grayscale(100%);
    -o-filter: grayscale(100%);
    filter: url(desaturate.svg#greyscale);
    -webkit-filter: grayscale(1);
    filter: gray;
}

</style>
<script type="text/javascript">
</script>
<body bgcolor="#000000">
<div id="ajabox">
    <img src="http://fc03.deviantart.net/fs70/f/2011/123/c/9/adam_jensen__s_army_____________by_gtanmay-d3fh5pw.png" style="width:332px;" class="desaturate"/>
    <div id="ajainner">
        <span>Adam Jensen's Army</span>
        <br />
        <span style="font-size:12px">Made from the CD cover of "Assassin's Creed: Brotherhood"<br />Feat. Adam Jensen(Deus Ex: Human Revolution)</span>
    </div>
</div>
4

1 回答 1

9 
img { /* Universal settings */
    -webkit-transition:all .4s;
    -moz-transition:all .4s;
    -ms-transition:all .4s;
    -o-transition:all .4s;
    transition:all .4s;
}
img:not(:hover) {
    -webkit-filter:grayscale(100%);
    -moz-filter:grayscale(100%);
    -ms-filter:grayscale(100%);
    -o-filter:grayscale(100%);
    filter:grayscale(100%);
}
img:hover {
    -webkit-filter:grayscale(0%);
    -moz-filter:grayscale(0%);
    -ms-filter:grayscale(0%);
    -o-filter:grayscale(0%);
    filter:grayscale(0%);
}

:not 选择器在较旧的浏览器中不起作用，但也不会过滤，所以它应该不是什么大问题。

示例小提琴。

于 2013-01-16T06:23:37.093 回答