Javascript实现的分页函数
2024-09-06 12:44:13
供稿：网友
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/"><tr><td 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>";
