Jquery实现简单的分页

转，Jquery实现简单的翻页功能

<!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>分页</title>

<script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.7.2.min.js"></script>

<script type="text/javascript">

$(document).ready( function() {

   var total = Math.ceil($("ul li").length / 3);

   var current = 1;

   $("ul li:gt(2)").hide();

   $("#btnPrev").attr("disabled", "disabled").click( function() {

       $("#btnNext").removeAttr("disabled");

       current -= 1;

       $("ul li").show();

       var indexStart = (current - 1) * 3;

       var indexEnd = indexStart + 2;

       $("li:lt(" + indexStart + "), li:gt(" + indexEnd + ")", $("ul")).hide();

       if (current == 1) $(this).attr("disabled", "disabled");

   });

   $("#btnNext").click( function() {

       $("#btnPrev").removeAttr("disabled");

       current += 1;

       $("ul li").show();

       var indexStart = (current - 1) * 3;

       var indexEnd = current * 3 - 1 > $("ul li").length - 1 ? $("ul li").length - 1 : current * 3 - 1;

       $("li:lt(" + indexStart + "), li:gt(" + indexEnd +")", $("ul")).hide();

       if (current == total) $(this).attr("disabled", "disabled");

   });

});

</script>

</head>

<body>

<ul>

   <li>01</li>

    <li>02</li>

    <li>03</li>

    <li>04</li>

    <li>05</li>

    <li>06</li>

    <li>07</li>

</ul>

<input type="button" id="btnNext" value="上一页" /><input type="button" id="btnPrev" value="下一页" />

</body>

</html>

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