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js 各种分页算法

【发表于】:2010/10/31 19:27:00  已被访问:363次

将大量数据从数据库里取读并进行分页显示给浏览者在网站开发过程中最常见的功能之一,我自己是做PHP+Mysql开发的,用PHP实现分页是非常简单的。在蓝色上看到有人发过JS实现分页效果的 自我感觉不错所以摘抄过来。,我自己是做PHP+Mysql开发的,用PHP实现分页是非常简单的。在蓝色上看到有人发过JS实现分页效果的 自我感觉不错所以摘抄过来。

<script language="JavaScript" type="text/Javascript">
<!--
/*
showPages v1.1
=================================
Infomation
----------------------
Author : Lapuasi
E-Mail : lapuasi@gmail.com
Web : http://www.lapuasi.com
Date : 2005-11-17
Example
----------------------
var pg = new showPages('pg');
pg.pageCount = 12; //定义总页数(必要)
pg.argName = 'p';    //定义参数名(可选,缺省为page)
pg.printHtml();        //显示页数
Supported in Internet Explorer, Mozilla Firefox
*/
function showPages(name) { //初始化属性
this.name = name;      //对象名称
this.page = 1;         //当前页数
this.pageCount = 1;    //总页数
this.argName = 'page'; //参数名
this.showTimes = 1;    //打印次数
}
showPages.prototype.getPage = function(){ //丛url获得当前页数,如果变量重复只获取最后一个
var args = location.search;
var reg = new RegExp('[\?&]?' + this.argName + '=([^&]*)[&$]?', 'gi');
var chk = args.match(reg);
this.page = RegExp.$1;
}
showPages.prototype.checkPages = function(){ //进行当前页数和总页数的验证
if (isNaN(parseInt(this.page))) this.page = 1;
if (isNaN(parseInt(this.pageCount))) this.pageCount = 1;
if (this.page < 1) this.page = 1;
if (this.pageCount < 1) this.pageCount = 1;
if (this.page > this.pageCount) this.page = this.pageCount;
this.page = parseInt(this.page);
this.pageCount = parseInt(this.pageCount);
}
showPages.prototype.createHtml = function(mode){ //生成html代码
var strHtml = '', prevPage = this.page - 1, nextPage = this.page + 1;
if (mode == '' || typeof(mode) == 'undefined') mode = 0;
switch (mode) {
case 0 : //模式1 (页数,首页,前页,后页,尾页)
strHtml += '<span class="count">Pages: ' + this.page + ' / ' + this.pageCount + '</span>';
strHtml += '<span class="number">';
if (prevPage < 1) {
strHtml += '<span title="First Page">&#171;</span>';
strHtml += '<span title="Prev Page">&#139;</span>';
} else {
strHtml += '<span title="First Page"><a href="Javascript:' + this.name + '.toPage(1);">&#171;</a></span>';
strHtml += '<span title="Prev Page"><a href="Javascript:' + this.name + '.toPage(' + prevPage + ');">&#139;</a></span>';
}
for (var i = 1; i <= this.pageCount; i++) {
if (i > 0) {
if (i == this.page) {
strHtml += '<span title="Page ' + i + '">[' + i + ']</span>';
} else {
strHtml += '<span title="Page ' + i + '"><a href="Javascript:' + this.name + '.toPage(' + i + ');">[' + i + ']</a></span>';
}
}
}
if (nextPage > this.pageCount) {
strHtml += '<span title="Next Page">&#155;</span>';
strHtml += '<span title="Last Page">&#187;</span>';
} else {
strHtml += '<span title="Next Page"><a href="Javascript:' + this.name + '.toPage(' + nextPage + ');">&#155;</a></span>';
strHtml += '<span title="Last Page"><a href="Javascript:' + this.name + '.toPage(' + this.pageCount + ');">&#187;</a></span>';
}
strHtml += '</span><br />';
break;
case 1 : //模式1 (10页缩略,首页,前页,后页,尾页)
strHtml += '<span class="count">Pages: ' + this.page + ' / ' + this.pageCount + '</span>';
strHtml += '<span class="number">';
if (prevPage < 1) {
strHtml += '<span title="First Page">&#171;</span>';
strHtml += '<span title="Prev Page">&#139;</span>';
} else {
strHtml += '<span title="First Page"><a href="Javascript:' + this.name + '.toPage(1);">&#171;</a></span>';
strHtml += '<span title="Prev Page"><a href="Javascript:' + this.name + '.toPage(' + prevPage + ');">&#139;</a></span>';
}
if (this.page % 10 ==0) {
var startPage = this.page - 9;
} else {
var startPage = this.page - this.page % 10 + 1;
}
if (startPage > 10) strHtml += '<span title="Prev 10 Pages"><a href="Javascript:' + this.name + '.toPage(' + (startPage - 1) + ');">...</a></span>';
for (var i = startPage; i < startPage + 10; i++) {
if (i > this.pageCount) break;
if (i == this.page) {
strHtml += '<span title="Page ' + i + '">[' + i + ']</span>';
} else {
strHtml += '<span title="Page ' + i + '"><a href="Javascript:' + this.name + '.toPage(' + i + ');">[' + i + ']</a></span>';
}
}
if (this.pageCount >= startPage + 10) strHtml += '<span title="Next 10 Pages"><a href="Javascript:' + this.name + '.toPage(' + (startPage + 10) + ');">...</a></span>';
if (nextPage > this.pageCount) {
strHtml += '<span title="Next Page">&#155;</span>';
strHtml += '<span title="Last Page">&#187;</span>';
} else {
strHtml += '<span title="Next Page"><a href="Javascript:' + this.name + '.toPage(' + nextPage + ');">&#155;</a></span>';
strHtml += '<span title="Last Page"><a href="Javascript:' + this.name + '.toPage(' + this.pageCount + ');">&#187;</a></span>';
}
strHtml += '</span><br />';
break;
case 2 : //模式2 (前后缩略,页数,首页,前页,后页,尾页)
strHtml += '<span class="count">Pages: ' + this.page + ' / ' + this.pageCount + '</span>';
strHtml += '<span class="number">';
if (prevPage < 1) {
strHtml += '<span title="First Page">&#171;</span>';
strHtml += '<span title="Prev Page">&#139;</span>';
} else {
strHtml += '<span title="First Page"><a href="Javascript:' + this.name + '.toPage(1);">&#171;</a></span>';
strHtml += '<span title="Prev Page"><a href="Javascript:' + this.name + '.toPage(' + prevPage + ');">&#139;</a></span>';
}
if (this.page != 1) strHtml += '<span title="Page 1"><a href="Javascript:' + this.name + '.toPage(1);">[1]</a></span>';
if (this.page >= 5) strHtml += '<span>...</span>';
if (this.pageCount > this.page + 2) {
var endPage = this.page + 2;
} else {
var endPage = this.pageCount;
}
for (var i = this.page - 2; i <= endPage; i++) {
if (i > 0) {
if (i == this.page) {
strHtml += '<span title="Page ' + i + '">[' + i + ']</span>';
} else {
if (i != 1 && i != this.pageCount) {
strHtml += '<span title="Page ' + i + '"><a href="Javascript:' + this.name + '.toPage(' + i + ');">[' + i + ']</a></span>';
}
}
}
}
if (this.page + 3 < this.pageCount) strHtml += '<span>...</span>';
if (this.page != this.pageCount) strHtml += '<span title="Page ' + this.pageCount + '"><a href="Javascript:' + this.name + '.toPage(' + this.pageCount + ');">[' + this.pageCount + ']</a></span>';
if (nextPage > this.pageCount) {
strHtml += '<span title="Next Page">&#155;</span>';
strHtml += '<span title="Last Page">&#187;</span>';
} else {
strHtml += '<span title="Next Page"><a href="Javascript:' + this.name + '.toPage(' + nextPage + ');">&#155;</a></span>';
strHtml += '<span title="Last Page"><a href="Javascript:' + this.name + '.toPage(' + this.pageCount + ');">&#187;</a></span>';
}
strHtml += '</span><br />';
break;
case 3 : //模式3 (箭头样式,首页,前页,后页,尾页) (only IE)
strHtml += '<span class="count">Pages: ' + this.page + ' / ' + this.pageCount + '</span>';
strHtml += '<span class="arrow">';
if (prevPage < 1) {
strHtml += '<span title="First Page">9</span>';
strHtml += '<span title="Prev Page">7</span>';
} else {
strHtml += '<span title="First Page"><a href="Javascript:' + this.name + '.toPage(1);">9</a></span>';
strHtml += '<span title="Prev Page"><a href="Javascript:' + this.name + '.toPage(' + prevPage + ');">7</a></span>';
}
if (nextPage > this.pageCount) {
strHtml += '<span title="Next Page">8</span>';
strHtml += '<span title="Last Page">:</span>';
} else {
strHtml += '<span title="Next Page"><a href="Javascript:' + this.name + '.toPage(' + nextPage + ');">8</a></span>';
strHtml += '<span title="Last Page"><a href="Javascript:' + this.name + '.toPage(' + this.pageCount + ');">:</a></span>';
}
strHtml += '</span><br />';
break;
case 4 : //模式4 (下拉框)
if (this.pageCount < 1) {
strHtml += '<Select name="toPage" disabled>';
strHtml += '<option value="0">No Pages</option>';
} else {
var chkSelect;
strHtml += '<Select name="toPage" onchange="' + this.name + '.toPage(this);">';
for (var i = 1; i <= this.pageCount; i++) {
if (this.page == i) chkSelect=' Selected="Selected"';
else chkSelect='';
strHtml += '<option value="' + i + '"' + chkSelect + '>Pages: ' + i + ' / ' + this.pageCount + '</option>';
}
}
strHtml += '</Select>';
break;
case 5 : //模式5 (输入框)
strHtml += '<span class="input">';
if (this.pageCount < 1) {
strHtml += '<input type="text" name="toPage" value="No Pages" class="itext" disabled="disabled">';
strHtml += '<input type="button" name="go" value="GO" class="ibutton" disabled="disabled"></option>';
} else {
strHtml += '<input type="text" value="Input Page:" class="ititle" readonly="readonly">';
strHtml += '<input type="text" id="pageInput' + this.showTimes + '" value="' + this.page + '" class="itext" title="Input page" onkeypress="return ' + this.name + '.formatInputPage(event);" onfocus="this.Select()">';
strHtml += '<input type="text" value=" / ' + this.pageCount + '" class="icount" readonly="readonly">';
strHtml += '<input type="button" name="go" value="GO" class="ibutton" onclick="' + this.name + '.toPage(document.getElementById(\'pageInput' + this.showTimes + '\').value);"></option>';
}
strHtml += '</span>';
break;
default :
strHtml = 'Javascript showPage Error: not find mode ' + mode;
break;
}
return strHtml;
}
showPages.prototype.createUrl = function (page) { //生成页面跳转url
if (isNaN(parseInt(page))) page = 1;
if (page < 1) page = 1;
if (page > this.pageCount) page = this.pageCount;
var url = location.protocol + '//' + location.host + location.pathname;
var args = location.search;
var reg = new RegExp('([\?&]?)' + this.argName + '=[^&]*[&$]?', 'gi');
args = args.replace(reg,'$1');
if (args == '' || args == null) {
args += '?' + this.argName + '=' + page;
} else if (args.substr(args.length - 1,1) == '?' || args.substr(args.length - 1,1) == '&') {
args += this.argName + '=' + page;
} else {
args += '&' + this.argName + '=' + page;
}
return url + args;
}
showPages.prototype.toPage = function(page){ //页面跳转
var turnTo = 1;
if (typeof(page) == 'object') {
turnTo = page.options[page.SelectedIndex].value;
} else {
turnTo = page;
}
self.location.href = this.createUrl(turnTo);
}
showPages.prototype.printHtml = function(mode){ //显示html代码
this.getPage();
this.checkPages();
this.showTimes += 1;
document.write('<div id="pages_' + this.name + '_' + this.showTimes + '" class="pages"></div>');
document.getElementById('pages_' + this.name + '_' + this.showTimes).innerHTML = this.createHtml(mode);
}
showPages.prototype.formatInputPage = function(e){ //限定输入页数格式
var ie = navigator.appName=="Microsoft Internet Explorer"?true:false;
if(!ie) var key = e.which;
else var key = event.keyCode;
if (key == 8 || key == 46 || (key >= 48 && key <= 57)) return true;
return false;
}
//-->
</script>
<style type="text/css">
/* Pages Main Tyle */
.pages {
color: #000000;
cursor: default;
font-size: 10px;
font-family: Tahoma, Verdana;
padding: 3px 0px 3px 0px;
}
.pages .count, .pages .number, .pages .arrow {
color: #000000;
font-size: 10px;
background-color: #F7F7F7;
border: 1px solid #CCCCCC;
}
/* Page and PageCount Style */
.pages .count {
font-weight: bold;
border-right: none;
padding: 2px 10px 1px 10px;
}
/* Mode 0,1,2 Style (Number) */
.pages .number {
font-weight: normal;
padding: 2px 10px 1px 10px;
}
.pages .number a, .pages .number span {
font-size: 10px;
}
.pages .number span {
color: #999999;
margin: 0px 3px 0px 3px;
}
.pages .number a {
color: #000000;
text-decoration: none;
}
.pages .number a:hover {
color: #0000ff;
}
/* Mode 3 Style (Arrow) */
.pages .arrow {
font-weight: normal;
padding: 0px 5px 0px 5px;
}
.pages .arrow a, .pages .arrow span {
font-size: 10px;
font-family: Webdings;
}
.pages .arrow span {
color: #999999;
margin: 0px 5px 0px 5px;
}
.pages .arrow a {
color: #000000;
text-decoration: none;
}
.pages .arrow a:hover {
color: #0000ff;
}
/* Mode 4 Style (Select) */
.pages Select, .pages input {
color: #000000;
font-size: 10px;
font-family: Tahoma, Verdana;
}
/* Mode 5 Style (Input) */
.pages .input input.ititle, .pages .input input.itext, .pages .input input.icount {
color: #666666;
font-weight: bold;
background-color: #F7F7F7;
border: 1px solid #CCCCCC;
}
.pages .input input.ititle {
width: 70px;
text-align: right;
border-right: none;
}
.pages .input input.itext {
width: 25px;
color: #000000;
text-align: right;
border-left: none;
border-right: none;
}
.pages .input input.icount {
width: 35px;
text-align: left;
border-left: none;
}
.pages .input input.ibutton {
height: 17px;
color: #FFFFFF;
font-weight: bold;
font-family: Verdana;
background-color: #999999;
border: 1px solid #666666;
padding: 0px 0px 2px 1px;
margin-left: 2px;
cursor: hand;
}
/* body */
body {
font-size: 14px;
}
</style>
<script language="JavaScript" type="text/Javascript">
<!--
var pg = new showPages('pg');
pg.pageCount =12;  // 定义总页数(必要)
//pg.argName = 'p';  // 定义参数名(可选,默认为page)
document.write('<br>Show Times: ' + pg.showTimes + ', Mood Default');
pg.printHtml();
document.write('<br>Show Times: ' + pg.showTimes + ', Mood 0');
pg.printHtml(0);
document.write('<br>Show Times: ' + pg.showTimes + ', Mood 1');
pg.printHtml(1);
document.write('<br>Show Times: ' + pg.showTimes + ', Mood 2');
pg.printHtml(2);
document.write('<br>Show Times: ' + pg.showTimes + ', Mood 3 (only IE)');
pg.printHtml(3);
document.write('<br>Show Times: ' + pg.showTimes + ', Mood 4');
pg.printHtml(4);
document.write('<br>Show Times: ' + pg.showTimes + ', Mood 5');
pg.printHtml(5);
//-->
</script>

 
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