/*jquery.kun_page.jslxk 2014.06.16www.49028c.com/wingkun---------------------------------參數config:dataCount:數據總數pageSize:頁數據條數maxButton:頁碼按鈕數目  showCustom:是否能手動輸入頁碼   pageChange:頁變更事件參數：(i,s,c)i:pageIndex,當前頁s:pageSize,頁數據條數c:pageCount,總頁數*/(function($){$.fn.page = function (config) {    if (this.length != 1) {        throw "k_page:如有多個page請調用多次!";    }       var defaults = { dataCount: 1, pageSize: 10, maxButton: 6, showCustom: true, pageChange: null }    config = $.extend(defaults, config);    if (config.maxButton <= 1) config.maxButton = 2;    if (config.pageSize < 1) config.pageSize = 1;    //按鈕數目需偶數    if (config.maxButton % 2 != 0)        config.maxButton++;    var pageIndex = 1, pageCount, move_kf;    //初始化頁數    function initcount() {        pageCount = config.dataCount % config.pageSize == 0 ? config.dataCount / config.pageSize : parseInt(config.dataCount / config.pageSize) + 1;    }    initcount();    var PRev = "<div class='k_p_prev'><i></i>上一頁</div>", next = "<div class='k_p_next'>下一頁<i></i></div>", pbody = $("<span style='display:block;float:left;overflow:hidden;'></span>"), pcustom = $("<span class='k_custom'>到第&nbsp;<span></span>&nbsp;頁 </span><div class='k_btn'>確定</div>"), cl = "<div class='k_cl'></div>", pipt = $("<input class='k_ipt'>");    this.empty().addClass("kun_page").append(prev);    pipt.keypress(function (e) {        if (e.which == 13) {            topage("確定");            return false;        }    }).appendTo(pcustom.children());    if (config.pageChange) {        this.unbind("click").bind("click", function (e) {            var _t = $(e.target);            if (_t[0].tagName == "DIV" && _t[0].className != "kun_page") {                topage(_t.text());            }        });    }    //跳轉頁碼    function topage(text) {        switch (text) {            case "上一頁":                if (pageIndex - 1 < 1) {                    return;                }                pageIndex--;                move_kf = "sc_r";                break;            case "下一頁":                if (pageIndex + 1 > pageCount) {                    return;                }                pageIndex++;                move_kf = "sc_l";                break;            case "確定":                if (!/^/d+$/.test(pipt.val())) {                    pipt.val("");                    return;                }                text = parseInt(pipt.val());                if (text < 1 || text > pageCount) {                    pipt.val("");                    return;                }            default:                var _pindex = parseInt(text);                if (pageIndex == _pindex)                    return;                move_kf = pageIndex < _pindex ? "sc_l" : "sc_r";                pageIndex = _pindex;                break;        }        gopageChange();    }    //頁變更事件    function gopageChange() {        if (config.pageChange) {            if (config.dataCount != 0) {                config.pageChange(pageIndex, config.pageSize, pageCount);                endloading();            }        }    }    //異步加載結束    function endloading() {        initpage();    }    //添加頁碼    function initpage() {        pbody.empty();        var _t_maxb = config.maxButton / 2;        //前后頁碼集合        var _t_listp = [], _t_listn = [];        var _min = 0, _max = pageCount;        for (var i = 1; i <= _t_maxb; i++) {            var _t_prev = pageIndex - i, _t_next = pageIndex + i;            //當前頁碼之前的頁            if (_t_prev > 0) {                _t_listp.push("<div class='k_p_page'>" + _t_prev + "</div>");                if (i == _t_maxb) _min = _t_prev;            }            //當前頁碼之后的頁            if (_t_next <= pageCount) {                _t_listn.push("<div class='k_p_page'>" + _t_next + "</div>");                if (i == _t_maxb) _max = _t_next;            }        }        //顯示第一頁        if (_min > 1) pbody.append("<div class='k_p_page'>1</div>");        //顯示前 ……        if (_min - 1 > 1) pbody.append("<em>...</em>");        for (var i = _t_listp.length; i >= 0; i--) {            pbody.append(_t_listp[i]);        }        pbody.append("<div class='k_p_page k_p_current'>" + pageIndex + "<i class='k_m " + move_kf + "'></i></div>");        for (var i = 0; i < _t_listn.length; i++) {            pbody.append(_t_listn[i]);        }        //顯示后 ……        if (pageCount - _max > 1) pbody.append("<em>...</em>");        //顯示最后一頁        if (_max < pageCount) pbody.append("<div class='k_p_page'>" + pageCount + "</div>");    }    initpage();    gopageChange();    this.append(pbody).append(next);    if (config.showCustom)        this.append(pcustom);    this.append(cl);    return { reload: gopageChange, pageCount: pageCount, recount: function (e) {        //重新計算頁數        config.dataCount = e;        pageIndex = 1;        initcount();        initpage();        gopageChange();    }    };    //console.log(_min + "*" + _max + "*" + pageCount);}})(jQuery)