star
{
margin: 0;
padding: 0;
}
ul {
list-style-type: none;
}
.container {
width: 400px;
margin: 10px auto;
}
#star ul, #star span {
float: left;
display: inline;
height: 19px;
line-height: 19px;
}
#star ul {
margin: 0 10px;
}
#star li {
float: left;
cursor: pointer;
background: url("images/star-img.png") no-repeat;
width: 18px;
text-indent: -9999px;
background-position: -28px -2px;
height: 18px;
padding-right: 5px;
}
#star li.on {
background-position: -2px -2px;
}
p {
display: none;
position: absolute;
top: 30px;
width: 159px;
padding: 0 10px;
font-style: normal;
background-color: #eee;
border: 1px solid #ddd;
}
em {
display: block;
color: orangered;
}
strong {
margin-left: 10px;
color: orangered;
}
<body>
<div id="star" class="container">
<span style="font-size: 18px">点击星星就能打分</span>
<ul id="box" class="stars">
<li><a href="javascript:;"></a></li>
<li><a href="javascript:;"></a></li>
<li><a href="javascript:;"></a></li>
<li><a href="javascript:;"></a></li>
<li><a href="javascript:;"></a></li>
</ul>
<span></span>
<p></p>
</div>
<script>
var star = document.getElementById('star'),
imgs = star.getElementsByTagName('li'),
op = document.getElementsByTagName('p')[0],
box = document.getElementById('box'),
oSpan = document.getElementsByTagName('span')[1],
count = 0;
var aMsg = [
'很不满意|差的太离谱',
'不满意|部分有破损',
'一般|质量一般',
'满意|质量不错',
'非常满意|质量非常好'
];
for (var i=1; i<=imgs.length; i++) {
imgs[i-1].index = i;
imgs[i-1].onmouseover = function () {
imgSrc(this.index);
op.style.display = 'block';
op.style.left = box.offsetLeft + this.index * this.offsetWidth - 80 + 'px';
op.innerHTML = '<em><b>' + this.index + '</b> 分 ' + aMsg[this.index-1].match(/(.+)\|/)[1] + '</em>' +
aMsg[this.index-1].match(/\|(.+)/)[1]
};
imgs[i-1].onmouseout = function () {
imgSrc();
op.style.display = 'none';
console.log(1);
};
imgs[i-1].onclick = function () {
count = this.index;
op.style.display = 'none';
oSpan.innerHTML = '<strong>' + this.index + '分</strong> (' + aMsg[this.index-1].match(/\|(.+)/)[1] + ')';
};
function imgSrc(a) {
score = a || count;
for (var i=0; i<imgs.length; i++) {
imgs[i].className = i < score ?'on' : '';
}
}
}
代码在网上搜的,其实一开始自己写的星星图片是用<img>的src引进的, 但是在鼠标移动到不同的星星时, 总是闪一下, 就把星星图设为背景图了,但还是闪, 其实把星星之间用padding隔开就好了, 用margin的话每次离开一颗星星都要先把所有星星变为灰色, 就会闪一下
正则就是分别选择|前或|后的文本
浮动层左边的位置就是星星左边界再向左80px
background-position
/* Edge offsets values */
background-position: bottom 10px right 20px;
background-position: right 3em bottom 10px;
background-position: bottom 10px right;
background-position: top right 10px;
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