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jquery分页效果

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昨天在腾讯视频里看中国好声音,看到下面的视频列表,有个分页,顿时就去探测了下,看看是怎么实现的。我开始以为是ajax来分页的,谁知道是数据全部读 取出来的,只是分条件显示数据而已,所以这个效果我就想要实现,由于昨晚时间不够,早点睡了,今天抽空还是把它实现了,下面我就分享下代码,顺便截个腾讯 的效果加深大家的印象。  
 原文地址:<a target="_blank" href="http://www.dayday28.com/post/2012-09-11/40039431075" rel="nofollow">http://www.dayday28.com/post/2012-09-11/40039431075</a>  
 Demo演示地址:<a target="_blank" href="http://www.osctools.net/jsbin/jemosxvn/1/edit#preview" rel="nofollow">http://www.osctools.net/jsbin/jemosxvn/1/edit#preview</a> 
 
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
<title>jquery伪分页效果</title> 
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js" type="text/javascript"></script> 
<script type="text/javascript"> 
    $(document).ready(function(){ 
            $("ul li:gt(3)").hide();//初始化,前面4条数据显示,其他的数据隐藏。 
            var total_q=$("ul li").index()+1;//总数据 
            var current_page=4;//每页显示的数据 
            var current_num=1;//当前页数 
            var total_page= Math.round(total_q/current_page);//总页数   
            var next=$(".next");//下一页 
            var prev=$(".prev");//上一页 
            $(".total").text(total_page);//显示总页数 
            $(".current_page").text(current_num);//当前的页数 
              
            //下一页 
            $(".next").click(function(){ 
                if(current_num==7){ 
                        return false;//如果大于总页数就禁用下一页 
                    } 
                    else{ 
                        $(".current_page").text(++current_num);//点击下一页的时候当前页数的值就加1 
                        $.each($('ul li'),function(index,item){ 
                            var start = current_page* (current_num-1);//起始范围 
                            var end = current_page * current_num;//结束范围 
                            if(index >= start && index < end){//如果索引值是在start和end之间的元素就显示,否则就隐 
                                $(this).show(); 
                            }else { 
                                $(this).hide();  
                            } 
                        }); 
                    } 
            }); 
            //上一页方法 
            $(".prev").click(function(){ 
                    if(current_num==1){ 
                        return false; 
                    }else{ 
                        $(".current_page").text(--current_num); 
                        $.each($('ul li'),function(index,item){ 
                            var start = current_page* (current_num-1);//起始范围 
                            var end = current_page * current_num;//结束范围 
                            if(index >= start && index < end){//如果索引值是在start和end之间的元素就显示,否则就隐藏 
                                $(this).show(); 
                 &n
补充:web前端 , JavaScript ,
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