【 tulaoshi.com - Web开发 】
From: IECN.Net ; Author: 钟钟
/**
* 分页类构造
* 参数 nTotalList: 总条数
* 参数 nPageSize: 每页显示条数
* 参数 nPageNum: 当前页码
* 参数 sPageUrl: 分页链接的URL,页码以[pn]代替,输出时将被替换为实际页码
* 参数 nPageListSize: 页码列表(下拉框)中显示的最多页码条数。该参数可省略,默认100
*/
function Pagination(nTotalList, nPageSize, nPageNum, sPageUrl, nPageListSize) {
this.totalList = nTotalList;
this.pageSize = nPageSize;
this.pageNum = nPageNum;
if (nTotalList == 0)
this.totalPages = 1;
else
this.totalPages = Math.floor((this.totalList-1)/this.pageSize + 1);
this.pageUrl = sPageUrl;
if (arguments[4])
this.pageListSize = nPageListSize;
else
this.pageListSize = 100;
}
/**
* 生成分页,将HTML直接输出
* 无参数
* 无返回值
*/
Pagination.prototype.generate = function() {
var output = "";
output += "table width="98%" cellspacing="1" cellpadding="3" align="center"trtd align="right"";
output += "共 " + this.totalList + " 条 每页 " + this.pageSize + " 条 当前第 ";
output += "select onchange="if(this.value)location.href='" + this.pageUrl + "'.replace(/[pn]/,";
output += "this.value);" align="absMiddle" style="font:normal 9px Verdana,Arial,宋体;"";
var firstPage = this.pageNum - Math.floor(this.pageListSize/2);
if (firstPage 1)
firstPage = 1;
var lastPage = firstPage + this.pageListSize - 1;
if (lastPage this.totalPages) {
lastPage = this.totalPages;
firstPage = lastPage - this.pageListSize + 1;
if (firstPage 1)
firstPage = 1;
}
if (firstPage 1) {
output += "option value="1"1/option";
if (firstPage 2)
output += "option value=""…/option";
}
for (var p = firstPage; p = lastPage; p++) {
output += "option value="" + p + """;
if (p == this.pageNum)
output += " selected="yes"";
output += "" + p + "/option";
}
if (lastPage this.totalPages) {
if (lastPage this.totalPages - 1)
output += "option value=""…/option";
output += "option value="" + this.totalPages + """ + this.totalPages + "/option";
}
if (this.pageNum this.totalPages)
output += "option value="" selected="yes"页码超出范围/option";
output += "/select";
output += "/" + this.totalPages + " 页 ";
if (this.pageNum == 1) {
output += "[首页] ";
output += "[上页] ";
}
else {
output += "a href="" + this.pageUrl.replace(/[pn]/, "1") + ""[首页]/a ";
output += "a href="" + this.pageUrl.replace(/[pn]/, this.pageNum-1) + ""[上页]/a ";
}
if (this.pageNum == this.totalPages) {
output += "[下页] ";
output += "[尾页]";
}
else {
output += "a href="" + this.pageUrl.replace(/[pn]/, this.pageNum+1) + ""[下页]/a ";
output += "a href="" + this.pageUrl.replace(/[pn]/, this.totalPages) + ""[尾页]/a ";
}
output += "/td/tr/table";
document.writeln(output);
}