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jquery - 5 星级评级需要帮助 - Jquery

转载 作者:行者123 更新时间:2023-12-01 00:25:33 26 4
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我正在尝试建立一个星级评定系统。我现在拥有的代码执行以下操作:

当鼠标悬停在星星上时突出显示星星,但当鼠标移开时恢复到之前的状态。

我想为其添加以下功能:当我单击一颗星星时,即使将鼠标从星星上移开,我单击的星星数量也应保持突出显示。

有人可以帮我解决这个问题吗?

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd"
>
<html lang="en">
<head>
<title>AJAX 5 Star Rating</title>

<script src="http://code.jquery.com/jquery-latest.js"></script>
<script>

// This is the first thing we add ------------------------------------------
$(document).ready(function() {

$('.rate_widget').each(function(i) {
var widget = this;
var out_data = {
widget_id : $(widget).attr('id'),
fetch: 1
};
$.post(
'ratings.php',
out_data,
function(INFO) {
$(widget).data( 'fsr', INFO );
set_votes(widget);
},
'json'
);
});


$('.ratings_stars').hover(
// Handles the mouseover
function() {
$(this).prevAll().andSelf().addClass('ratings_over');
$(this).nextAll().removeClass('ratings_vote');
},
// Handles the mouseout
function() {
$(this).prevAll().andSelf().removeClass('ratings_over');
// can't use 'this' because it wont contain the updated data
set_votes($(this).parent());
}
);


// This actually records the vote
$('.ratings_stars').bind('click', function() {
var star = this;
var widget = $(this).parent();

var clicked_data = {
clicked_on : $(star).attr('class'),
widget_id : $(star).parent().attr('id')
};
$.post(
'ratings.php',
clicked_data,
function(INFO) {
widget.data( 'fsr', INFO );
set_votes(widget);
},
'json'
);
});



});

function set_votes(widget) {

var avg = $(widget).data('fsr').whole_avg;
var votes = $(widget).data('fsr').number_votes;
var exact = $(widget).data('fsr').dec_avg;

window.console && console.log('and now in set_votes, it thinks the fsr is ' + $(widget).data('fsr').number_votes);

$(widget).find('.star_' + avg).prevAll().andSelf().addClass('ratings_vote');
$(widget).find('.star_' + avg).nextAll().removeClass('ratings_vote');
$(widget).find('.total_votes').text( votes + ' votes recorded (' + exact + ' rating)' );
}
// END FIRST THING








</script>

<style>
.rate_widget {
border: 1px solid #CCC;
overflow: visible;
padding: 10px;
position: relative;
width: 180px;
height: 32px;
}
.ratings_stars {
background: url('star_empty.png') no-repeat;
float: left;
height: 28px;
padding: 2px;
width: 32px;
}
.ratings_vote {
background: url('star_full.png') no-repeat;
}
.ratings_over {
background: url('star_highlight.png') no-repeat;
}
.total_votes {
background: #eaeaea;
top: 58px;
left: 0;
padding: 5px;
position: absolute;
}
.event_choice {
font: 10px verdana, sans-serif;
margin: 0 auto 40px auto;
width: 180px;
}
h1 {
text-align: center;
width: 400px;
margin: 20px auto;
}
</style>
</head>
<body>
<h1> Rate the event! </h1>
<div class='event_choice'>
Rate: Raiders of the Lost Ark
<div id="r1" class="rate_widget">
<div class="star_1 ratings_stars"></div>
<div class="star_2 ratings_stars"></div>
<div class="star_3 ratings_stars"></div>
<div class="star_4 ratings_stars"></div>
<div class="star_5 ratings_stars"></div>
<div class="total_votes">vote data</div>
</div>
</div>

<div class='event_choice'>
Rate: The Hunt for Red October
<div id="r2" class="rate_widget">
<div class="star_1 ratings_stars"></div>
<div class="star_2 ratings_stars"></div>
<div class="star_3 ratings_stars"></div>
<div class="star_4 ratings_stars"></div>
<div class="star_5 ratings_stars"></div>
<div class="total_votes">vote data</div>
</div>
</div>
</body>
</html>

最佳答案

我找到了great CSS only way of doing the hover effects 。保持星星突出显示仍然需要一些 JavaScript,但要少得多。

总体思路是,您有一个具有设定长度的 ul 背景图像(星星)(在您的情况下,是图像宽度的 5 倍,即 5 个星星),并在 x 轴上重复该图像(background: url(star.gif) repeat-x;)。每个<a>设置为不同的宽度(5 颗星为 20%、40%、60%、80%、100%)并放置在不同的 z-index 上。

以下是作者想法的更新,它更接近您的用例:

HTML:

<div class='rate_widget'>
<ul>
<li><a href='#' class='one-star'>1</a></li>
<li><a href='#' class='two-stars'>2</a></li>
<li><a href='#' class='three-stars'>3</a></li>
<li><a href='#' class='four-stars'>4</a></li>
<li><a href='#' class='five-stars'>5</a></li>
</ul>
</div>

CSS:

.rate_widget ul{
background: url(star_empty.png) repeat-x;
}

.rate_widget a:hover{
background: url(star_highlight.png) repeat-x;
}

.rate_widget a:active,
.rate_widget a:focus,
.rate_widget a.checked{
background: url(star_full.png) repeat-x;
}

.rate_widget ul{
position:relative;
width:125px; /*5 times the width of your star*/
height:25px; /*height of your star*/
overflow:hidden;
list-style:none;
margin:0;
padding:0;
background-position: left top;
}

.rate_widget li{
display: inline;
}

.rate_widget a{
position:absolute;
top:0;
left:0;
text-indent:-1000em;
height:25px; /*height of your star*/
line-height:25px; /*height of your star*/
outline:none;
overflow:hidden;
border: none;
}

.rate_widget a.one-star{
width:20%;
z-index:6;
}

.rate_widget a.two-stars{
width:40%;
z-index:5;
}

.rate_widget a.three-stars{
width:60%;
z-index:4;
}

.rate_widget a.four-stars{
width:80%;
z-index:3;
}

.rate_widget a.five-stars{
width:100%;
z-index:2;
}

.rate_widget a.checked{
z-index:1;
}

Javascript:

$('.rate_widget a').click(function(){
// make sure the chosen star stays selected
var star = $(this);
star.closest('ul').find('.checked').removeClass('checked');
star.addClass('checked');

//whatever else you want to do when something gets clicked
});

这是一个查看其实际效果的 fiddle :http://www.jsfiddle.net/BHaTu/

关于jquery - 5 星级评级需要帮助 - Jquery,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/4351658/

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