JS分页控件，可用于无刷新分页

function PagerBar(recordcount, pagesize, pageindex, showpagecount) {

    var NumberRegex = new RegExp(/^\d+$/);

    this.PageIndex = 1; //页索引，当前页

    if (pageindex != null && NumberRegex.test(pageindex)) this.PageIndex = parseInt(pageindex);

    this.PageSize = 10; //页面大小

    if (pagesize != null && NumberRegex.test(pagesize)) this.PageSize = parseInt(pagesize);

    this.RecordCount = 0;

    if (recordcount != null && NumberRegex.test(recordcount)) this.RecordCount = parseInt(recordcount); //记录总数

    this.PageCount = 0;  //页总数

    var PagerBar = this;

    function CalculatePageCount(_pagesize, _recordcount) {//计算总页数

        if (_pagesize != null && NumberRegex.test(_pagesize)) PagerBar.PageSize = parseInt(_pagesize);

        if (_recordcount != null && NumberRegex.test(_recordcount)) PagerBar.RecordCount = parseInt(_recordcount);

        else PagerBar.RecordCount = 0;

        if (PagerBar.RecordCount % PagerBar.PageSize == 0) {//计算总也页数

            PagerBar.PageCount = parseInt(PagerBar.RecordCount / PagerBar.PageSize);

        }

        else {

            PagerBar.PageCount = parseInt(PagerBar.RecordCount / PagerBar.PageSize) + 1;

        }

    }

    if (this.RecordCount != 0) {//如果传入了记录总数则计算总页数

        CalculatePageCount(this.PageSize, this.RecordCount);

    }

    this.ReplaceString = "《#PageLink》"; //替换页数的文本，注：不可以有正则表达式中的符号

    this.ShowPagesCount = 5; //显示页数量

    if (showpagecount != null && NumberRegex.test(showpagecount.toString())) this.ShowPagesCount = parseInt(showpagecount);

    this.PreviouBarFormat = ""; //上一页显示文本格式

    this.IsShowPreviouString = true; //是否显示上一页

    this.NextBarFormat = ""; //下一页显示文本格式

    this.IsShowNextString = true; //是否显示下一页

    this.PageBarFormat = ""; //页面连接显示文本格式

    this.CurrentBarFormat = ""; //当前页显示文本格式

    this.IsShowPageString = true; //是否显示页索引

    this.FristBarFormat = ""; //首页链接显示文本格式

    this.IsShowFristString = true; //是否显示首页

    this.LastBarFormat = ""; //尾页显示文本格式

    this.IsShowLastString = true; //是否显示尾页

    this.CurrentRecordBarFormat = "当前记录{0}-{1}"; //当前记录显示文本格式

    this.IsShowCurrentRecordString = true; //是否显示当前记录

    this.CurrentPageBarFormat = "当前第" + this.ReplaceString + "页，共" + (this.PageCount == 0 ? 1 : this.PageCount) + "页"; //当前页文字说明文本格式

    this.IsShowCurrentPageString = true; //是否显示当前页文字说明文本

    this.OtherBarFormat = ""; //其他也显示文本

    this.IsShowOtherString = true; //是否显示其它页文本

    var regexp = new RegExp(this.ReplaceString, "g"); //替换页数文本正则表达式

    function GetFristPageString() {//获取首页文本

        if (PagerBar.FristBarFormat != "" && PagerBar.PageIndex != 1) {

            return PagerBar.FristBarFormat.replace(regexp, 1);

        }

        else {

            return "";

        }

    }

    function GetPreviouPageString() { //获取上一页文本

        if (PagerBar.PreviouBarFormat != "") {

            if (PagerBar.RecordCount > PagerBar.PageSize && PagerBar.PageIndex != 1) {//上一页HTML输出

                return PagerBar.PreviouBarFormat.replace(regexp, PagerBar.PageIndex - 1);

            }

            else {

                return "";

            }

        }

        else {

            return "";

        }

    }

    function GetPageString() {//获取中间页数链接

        var pagestr = "";

        if (PagerBar.CurrentBarFormat != "" && PagerBar.PageBarFormat != "") {

            var ShowPageFirest = PagerBar.PageIndex - parseInt(PagerBar.ShowPagesCount / 2 + 1) < 0 ? 0 : PagerBar.PageIndex - parseInt(PagerBar.ShowPagesCount / 2 + 1); //计算显示页数的其实页数

            if (PagerBar.PageCount < PagerBar.ShowPagesCount) {//当也总数小于显示页数量

                ShowPageFirest = 0;

            }

            else {

                if (PagerBar.PageIndex > (PagerBar.PageCount - parseInt(PagerBar.ShowPagesCount / 2 + 1))) {//当页总数在后几页显示

                    ShowPageFirest = PagerBar.PageCount - PagerBar.ShowPagesCount;

                }

            }

            for (var i = ShowPageFirest; i < ShowPageFirest + PagerBar.ShowPagesCount; i++) {//循环出书页数文本

                if (PagerBar.PageIndex == i + 1) {

                    pagestr += PagerBar.CurrentBarFormat.replace(regexp, i + 1);

                }

                else {

                    pagestr += PagerBar.PageBarFormat.replace(regexp, i + 1);

                }

                if (i >= PagerBar.PageCount - 1) {//当到达页总数的时候挑出循环

                    break;

                }

            }

        }

        return pagestr;

    }

    function GetNextPageString() {//获取下一页链接

        if (PagerBar.NextBarFormat != "") {

            if (PagerBar.RecordCount > PagerBar.PageSize && PagerBar.PageIndex != PagerBar.PageCount) {//输出下一页HTMl

                return PagerBar.NextBarFormat.replace(regexp, PagerBar.PageIndex + 1);

            }

            else {

                return "";

            }

        }

        else {

            return "";

        }

    }

    function GetLastPageString() {//获取尾页链接

        if (PagerBar.LastBarFormat != "" && PagerBar.PageIndex != PagerBar.PageCount && PagerBar.RecordCount != 0) {

            return PagerBar.LastBarFormat.replace(regexp, PagerBar.PageCount);

        }

        else {

            return "";

        }

    }

  

    function GetFrontOtherPageString() {//获取前其它页链接

        if (PagerBar.OtherBarFormat != "") {

            if (PagerBar.PageIndex > PagerBar.ShowPagesCount / 2 + 1) {

                return PagerBar.OtherBarFormat.replace(regexp, PagerBar.PageIndex - PagerBar.ShowPagesCount <= 0 ? 1 : PagerBar.PageIndex - PagerBar.ShowPagesCount)

            }

            else {

                return "";

            }

        }

        else {

            return "";

        }

    }

    function GetAfterOtherPageString() {//获取后其它页链接

        if (PagerBar.OtherBarFormat != "") {

            if (PagerBar.PageIndex <= PagerBar.PageCount - PagerBar.ShowPagesCount / 2) {

                return PagerBar.OtherBarFormat.replace(regexp,

                PagerBar.PageIndex + PagerBar.ShowPagesCount >= PagerBar.PageCount ? PagerBar.PageCount : PagerBar.PageIndex + PagerBar.ShowPagesCount);

            }

            else {

                return "";

            }

        }

        else {

            return "";

        }

    }

    function GetCurrentRecordPageString() {//获取当前记录文本

        if (PagerBar.CurrentRecordBarFormat != "") {

            if (PagerBar.RecordCount == 0) {

                return "";

            }

            else {

                return PagerBar.CurrentRecordBarFormat.replace("{0}", (PagerBar.PageIndex - 1) * PagerBar.PageSize + 1).replace("{1}", PagerBar.PageIndex * PagerBar.PageSize > PagerBar.RecordCount ? PagerBar.RecordCount : PagerBar.PageIndex * PagerBar.PageSize);

            }

        }

        else return "";

    }

    function GetCurrentPageBarString() {//获取当前页记录文本

        if (PagerBar.CurrentPageBarFormat != "") {

            return PagerBar.CurrentPageBarFormat.replace(regexp, PagerBar.PageIndex);

        }

        else return "";

    }

    this.GetString = function (pageindex) {//输出HTML代码(全部模式）

        if (pageindex != null && NumberRegex.test(pageindex)) {//如果传入了页索引则赋值

            this.PageIndex = parseInt(pageindex);

        }

        if (this.PageCount == 0) {//如果没有计算过页总数，则计算页总数

            CalculatePageCount(this.PageSize, this.RecordCount);

        }

        var pagestr = "";

        if (this.IsShowCurrentPageString) {

            pagestr = GetCurrentPageBarString();

        }

        if (this.IsShowCurrentRecordString) {

            pagestr += GetCurrentRecordPageString();

        }

        if (this.IsShowFristString) {

            pagestr += GetFristPageString();

        }

        if (this.IsShowPreviouString) {

            pagestr += GetPreviouPageString();

        }

        if (this.IsShowOtherString) {

            pagestr += GetFrontOtherPageString();

        }

        if (this.IsShowPageString) {

            pagestr += GetPageString();

        }

        if (this.IsShowOtherString) {

            pagestr += GetAfterOtherPageString();

        }

        if (this.IsShowNextString) {

            pagestr += GetNextPageString();

        }

        if (this.IsShowLastString) {

            pagestr += GetLastPageString();

        }

        return pagestr;

    }

    this.GetNormalString = function (pageindex) {

        if (pageindex != null && NumberRegex.test(pageindex)) {//如果传入了页索引则赋值

            this.PageIndex = parseInt(pageindex);

        }

        if (this.PageCount == 0) {//如果没有计算过页总数，则计算页总数

            CalculatePageCount(this.PageSize, this.RecordCount);

        }

        var pagestr = "";

        pagestr += GetFristPageString();

        pagestr += GetPreviouPageString();

        pagestr += GetPageString();

        pagestr += GetNextPageString();

        pagestr += GetLastPageString();

        return pagestr;

    }

    this.GetSimpleString = function (pageindex) {

        if (pageindex != null && NumberRegex.test(pageindex)) {//如果传入了页索引则赋值

            this.PageIndex = parseInt(pageindex);

        }

        if (this.PageCount == 0) {//如果没有计算过页总数，则计算页总数

            CalculatePageCount(this.PageSize, this.RecordCount);

        }

        var pagestr = "";

        pagestr += GetPreviouPageString();

        pagestr += GetCurrentPageBarString();

        pagestr += GetNextPageString();

        return pagestr;

    }

}

    使用示例：

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1 2	<SCRIPT type=text/javascript><!--mce:0--></SCRIPT>    <STYLE><!--mce:2--></STYLE>    <DIV id=pager>    </DIV><SCRIPT type=text/javascript><!--mce:1--></SCRIPT> <PRE></PRE>