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

 

<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

 

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

 

$(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
	});
}