做一个星级评价的功能不是很难，但是要单纯用CSS写估计就有点难度了，先来个截图：



效果很简单，可能现在您现在脑子里已经有实现的思路了。下面先看一下我们通常情况下的实现方法：

CSS：

代码
          .jsstar
        {   list-style: none;
            margin: 0px;
            padding: 0px;
            width: 100px;
            height: 20px;
            position: relative;
            
            }
         .jsstar li  
         {
            padding:0px;
            margin: 0px;
            float: left;
            width:20px;
            height:20px;
            background:url(star_rating.gif) 0 0 no-repeat;
            }  


HTML：

<p>javascript + CSS实现</p>
<ul class="jsstar">
    <li title="一星"></li>
    <li title="二星"></li>
    <li title="三星"></li>
    <li title="四星"></li>
    <li title="五星"></li>
</ul>
JS：（我用的是jquery）

<script type="text/Javascript" src="jquery-1.3.1.js"></script>

    <script type="text/javascript">
    $(document).ready(function(){
        $(".jsstar >li").hover(
            function(){$(this).css({"background-position":"left bottom"}).PRev().trigger("mouSEOver")},
            function(){$(this).css({"background-position":"left top"}).prev().trigger("mouseout")})
        .click(function(){alert($(this).attr("title"))});     
    });
    </script>
这里是效果图：



是不是和上面的没什么区别，可是又一想如果用户禁掉了javascript岂不是效果很惨？

于是我们想到了用纯CSS实现，下面是代码：

CSS：

代码
1 /*CSS Star start*/
2         .star-rating
3         {
4             list-style: none;
5             margin: 0px;
6             padding: 0px;
7             width: 100px;
8             height: 20px;
9             position: relative;
10             background: url(star_rating.gif) top left repeat-x;
11         }
12         .star-rating li
13         {
14             padding: 0px;
15             margin: 0px;
16             float: left;
17         }
18         .star-rating li a
19         {
20             display: block;
21             width: 20px;
22             height: 20px;
23             text-decoration: none;
24             text-indent: -9000px;
25             z-index: 20;
26             position: absolute;
27             padding: 0px;
28         }
29         .star-rating li a:hover
30         {
31             background: url(star_rating.gif) left bottom;
32             z-index: 1;
33             left: 0px;
34         }
35         .star-rating a.one-star
36         {
37             left: 0px;
38         }
39         .star-rating a.one-star:hover
40         {
41             width: 20px;
42         }
43         .star-rating a.two-stars
44         {
45             left: 20px;
46         }
47         .star-rating a.two-stars:hover
48         {
49             width: 40px;
50         }
51         .star-rating a.three-stars:hover
52         {
53             width: 60px;
54         }
55         .star-rating a.three-stars
56         {
57             left: 40px;
58         }
59         .star-rating a.four-stars
60         {
61             left: 60px;
62         }
63         .star-rating a.four-stars:hover
64         {
65             width: 80px;
66         }
67         .star-rating a.five-stars
68         {
69             left: 80px;
70         }
71         .star-rating a.five-stars:hover
72         {
73             width: 100px;
74             
75         }


HTML：



<ul class='star-rating'>
  <li><a href='#' title='一星' class='one-star'>1</a></li>
  <li><a href='#' title='二星' class='two-stars'>2</a></li>
  <li><a href='#' title='三星' class='three-stars'>3</a></li>
  <li><a href='#' title='四星' class='four-stars'>4</a></li>
  <li><a href='#' title='五星' class='five-stars'>5</a></li>
</ul>
看看上面CSS的行号您是不是吓了一跳，这么简单的效果竟然用了这么多代码？在我看来不用JS就只能一个效果一个样式了，如果您还有更简单更炫的效果请指教！