jquery.rating.js
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/** http://biznesguide.ru/coding/156.html*/
;(function($){
$.rating = function(e, o){
this.options = $.extend({
fx: 'float',
image: '/images/stars.png',
width: 15,
stars: 5,
minimal: 0,
titles: ['голос','голоса','голосов'],
readOnly: false,
url: '',
type: 'post',
loader: '/images/ajax-loader.gif',
click: function(){}
}, o || {});
this.el = $(e);
this.left = 0;
this.val = parseFloat($('.val',e).val()) || 0;
if(this.val > this.options.stars) this.val = this.options.stars;
if(this.val < 0) this.val = 0;
this.old = this.val;
this.votes = parseInt($('.votes',e).val()) || '';
this.voteID = $('.vote-id',e).val() || '';
this.vote_wrap = $('<div class="vote-wrap"></div>');
this.vote_block = $('<div class="vote-block"></div>');
this.vote_hover = $('<div class="vote-hover"></div>');
this.vote_stars = $('<div class="vote-stars"></div>');
this.vote_active = $('<div class="vote-active"></div>');
this.vote_result = $('<div class="vote-result"></div>');
this.vote_success = $('<div class="vote-success"></div>');
this.loader = $('<img src="'+this.options.loader+'" alt="load...">');
this.init();
};
var $r = $.rating;
$r.fn = $r.prototype = {
rating: '0.1'
};
$r.fn.extend = $r.extend = $.extend;
$r.fn.extend({
init: function(){
this.render();
if(this.options.readOnly) return;
var self = this, left = 0, width = 0;
this.vote_hover.bind('mousemove mouseover',function(e){
if(self.options.readOnly) return;
var $this = $(this),
score = 0;
left = e.clientX>0 ? e.clientX: e.pageX;
width = left - $this.offset().left - 2;
var max = self.options.width*self.options.stars,
min = self.options.minimal*self.options.width;
if(width > max) width = max;
if(width < min) width = min;
score = Math.round( width/self.options.width * 10 ) / 10; //округляем до 1 знака после запятой
if(self.options.fx == 'half'){
width = Math.ceil(width/self.options.width*2)*self.options.width/2;
}
else if(self.options.fx != 'float'){
width = Math.ceil(width/self.options.width) * self.options.width;
}
score = Math.round( width/self.options.width * 10 ) / 10;
self.vote_active.css({
'width':width,
'background-position':'0 15px'
});
self.vote_success.html('Оценка: '+score + 'из 5');
})
.bind('mouseout',function(){
if(self.options.readOnly) return;
self.reset();
self.vote_success.empty();
}).
bind('click.rating',function(){
if(self.options.readOnly) return;
var score = Math.round( width/self.options.width * 10 ) / 10;
if(score > self.options.stars) score = self.options.stars;
if(score < 0) score = 0;
self.old = self.val;
self.val = (self.val*self.votes +score)/(self.votes + 1);
self.val.toFixed(1);
self.vote_success.html('Ваша оценка: '+score);
if(self.options.url != ''){
self.send(score);
}
self.options.readOnly = true;
self.options.click.apply(this,[score]);
});
},
set: function(){
this.vote_active.css({
'width':this.val*this.options.width,
'background-position':'0 15px'
});
},
reset: function(){
this.vote_active.css({
'width':this.old*this.options.width,
'background-position':'0 15px'
});
},
setvoters: function(){
this.vote_result.html(this.declOfNum(this.votes));
},
render: function(){
this.el.html(this.vote_wrap.append(
this.vote_hover.css({
padding:'0 4px',
height:this.options.width,
width:this.options.width*this.options.stars
}),
this.vote_result.text(this.declOfNum(this.votes)),
this.vote_success
));
this.vote_block.append(
this.vote_stars.css({
height:this.options.width,
width:this.options.width*this.options.stars,
background:"url('"+this.options.image+"') 0 0"
}),
this.vote_active.css({
height:this.options.width,
width:this.val*this.options.width,
background:"url('"+this.options.image+"') 0 15px"
})
).appendTo(this.vote_hover);
},
send: function(score){
var self = this;
this.vote_result.html(this.loader);
$.ajax({
url: self.options.url,
type: self.options.type,
data:{id:this.voteID,score:score},
dataType: 'json',
success: function(data){
if(data.status == 'OK') {
self.votes++;
self.set();
}
else{
self.reset();
}
self.setvoters();
if(data.msg)self.vote_success.html(data.msg);
}
});
},
declOfNum: function(number){
if(number <= 0) return '';
number = Math.abs(Math.floor(number));
cases = [2, 0, 1, 1, 1, 2];
return number+' '+ this.options.titles[ (number%100>4 && number%100<20)? 2 : cases[(number%10<5)?number%10:5] ];
}
});
$.fn.rating = function(o){
if (typeof o == 'string') {
var instance = $(this).data('rating'), args = Array.prototype.slice.call(arguments, 1);
return instance[o].apply(instance, args);
} else {
return this.each(function() {
var instance = $(this).data('rating');
if (instance) {
if (o) {
$.extend(instance.options, o);
}
instance.init();
} else {
$(this).data('rating', new $r(this, o));
}
});
}
};
})(jQuery);