使用jQuery实现点评星星效果

本文主要是介绍使用jQuery实现点评星星效果，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

使用jQuery实现点评星星效果

没什么好说的，直接上代码吧

1. html代码

Html代码

<table class="block">
<tr>
<td>
<span class="label">总体评价<em>*</em>:</span>
</td>
<td>
<div class="rating-wrap">
<ul class="rating-wrap-ul" onmouseout="onUlMouseOut()" onmouseover="onUlMouseOver()">
<li><a class="one-star" title="很差" data-hint="很差" href="javascript:clickStar(1);" onmouseover="onLiMouseOver(1)" onmouseout="onLiMouseOut()"></a></li>
<li><a class="two-stars" title="差" data-hint="差" href="javascript:clickStar(2);" onmouseover="onLiMouseOver(2)" onmouseout="onLiMouseOut()"></a></li>
<li><a class="three-stars" title="还行" data-hint="还行" href="javascript:clickStar(3);" onmouseover="onLiMouseOver(3)" onmouseout="onLiMouseOut()"></a></li>
<li><a class="four-stars" title="好" data-hint="好" href="javascript:clickStar(4);" onmouseover="onLiMouseOver(4)" onmouseout="onLiMouseOut()"></a></li>
<li><a class="five-stars" title="很好" data-hint="很好" href="javascript:clickStar(5);" onmouseover="onLiMouseOver(5)" onmouseout="onLiMouseOut()"></a></li>
</ul>
</div>
<span id="ratingText" class="active-hint" innerText=""></span>
</td>
</tr>
<tr>
<td>
<span class="label">评价<em>*</em>:</span>
</td>
<td>
<span class="note">(50-2000个字)</span>
<span id="textCount" class="note" innerText=""></span>
</td>
</tr>
<tr>
<td>
</td>
<td>
<textarea name="appraiseText" id="appraiseText" class="form-content-block form-textarea" rows="12"></textarea>
</td>
</tr>
<tr>
<td>
</td>
<td align="right">
<input type="button" value="提交" onclick="submitAppraise()">
<input type="button" value="关闭" onclick=" ">
</td>
</tr>
</table>

2. 所需要的css

Css代码

body {
color: #333;
font: normal normal normal 12px/1.5 Arial, 宋体, sans-serif;
}
.block{
clear: both;
margin-bottom:20px;
margin-bottom: 10px;
zoom: 1;
padding:5px 11px;border:1px solid #F5EEE8;
padding-top:10px;margin:0 10px 0;
padding-bottom:20px;border-bottom:1px dashed #E4E4E4;
margin:10px auto;padding:0;border:none;
}
.label{
float:right;
margin-right: 10px;
text-align: right;
font-weight: normal;
font-style:normal;
width: 94px;
}
em{
margin-right:5px;
color:#c00;
font-weight:bold;
font-style:normal;
margin-left:2px;
}
.note {
color: #999;
}
.form-textarea{
float: left;
font-family: Tahoma, Geneva, sans-serif;
margin-right: 5px;
width: 598px;
zoom: 1;
font-family: inherit;
font-size: 100%;
-webkit-appearance: textarea;
-webkit-box-orient: vertical;
-webkit-rtl-ordering: logical;
-webkit-user-select: text;
background-color: white;
border: 1px solid;
cursor: auto;
padding: 2px;
resize: auto;
white-space: pre-wrap;
word-wrap: break-word;
}
.rating-wrap {
display: inline-block;
float: left;
position: relative;
top: -2px;
width: 89px;
height: 20px;
margin-right: 5px;
padding: 4px 0 0 5px;
border: 1px solid #EFE0D7;
background: #FFF9F1;
z-index: 0;
}
.rating-wrap ul,.rating-wrap a:hover {
background-image: url(../images/star_shade.png);
background-repeat: no-repeat;
}
.rating-wrap ul {
-webkit-padding-start: 40px;
display: block;
list-style-type: disc;
margin: 1em 0px;
border: 0px;
margin: 0px;
outline: 0px;
padding: 0px;
list-style: none;
position: relative;
width: 85px;
height: 16px;
background-position: 0 -90px;
z-index: 10;
}
.rating-wrap li {
display: inline;
}
.rating-wrap a {
zoom: 1;
position: absolute;
left: 0;
top: 0;
display: block;
height: 16px;
}
.rating-wrap .five-stars {
width: 84px;
z-index: 10;
background-position: 0 0px;
}
.rating-wrap .four-stars {
width: 68px;
z-index: 20;
background-position: 0 -18px;
}
.rating-wrap .three-stars {
width: 51px;
z-index: 30;
background-position: 0 -36px;
}
.rating-wrap .two-stars {
width: 34px;
z-index: 40;
background-position: 0 -54px;
}
.rating-wrap .one-star {
width: 17px;
z-index: 50;
background-position: 0 -72px;
}
.active-hint{
color: #C00;
float: left;
padding-top:2px;
font-weight: normal;
font-style:normal;
}

3. 所需要的javascript代码

Js代码

$(document).ready(function(){
$("#appraiseText").bind("keydown", function(){
var count = $("#appraiseText").val().length;
if( count <= 200 ){
$("#textCount").html(" 还能输入<font color='green'><b>" + (200 - count) + "</b></font>个字");
}else{
$("#textCount").html(" 已超出<font color='red'><b>" + (count - 200) + "</b></font>个字");
}
});
});
var starValue=0;
function onUlMouseOut(){
var y = -90 + starValue * 18;
var position = "0 " + y + "px";
$(".rating-wrap-ul").css({
"background-position" : position
});
}
function onUlMouseOver(){
$(".rating-wrap-ul").css({
"background-position" : "0 -90px"
});
}
function onLiMouseOver(grade){
switch(grade){
case 1 : document.getElementById("ratingText").innerHTML="很差";break;
case 2 : document.getElementById("ratingText").innerHTML="差";break;
case 3 : document.getElementById("ratingText").innerHTML="还行";break;
case 4 : document.getElementById("ratingText").innerHTML="好";break;
case 5 : document.getElementById("ratingText").innerHTML="很好";break;
default : document.getElementById("ratingText").innerHTML="";
}
}
function onLiMouseOut(){
onLiMouseOver(starValue);
}
function clickStar(grade){
starValue = grade;
var y = -90 + grade * 18;
var position = "0 " + y + "px";
$(".rating-wrap-ul").css({
"background-position" : position
});
}