function page(_ref) {
    var pagesize = _ref.pagesize,
        pagetotal = _ref.pagetotal,
        curpage = _ref.curpage,
        id = _ref.id,
        getpage = _ref.getpage,
        showpagetotalflag = _ref.showpagetotalflag,
        showskipinputflag = _ref.showskipinputflag,
        pageamount = _ref.pageamount,
        datatotal = _ref.datatotal;
    if(!pagesize){
        pagesize = 0
    };
    if(!pagesize){
        pagesize = 0
    };
    if(!pagetotal){
        pagetotal = 0
    };
    if(!pageamount){
        pageamount = 0
    };
    if(!datatotal){
        datatotal = 0
    };
    this.pagesize = pagesize || 5; //分页个数
    this.pagetotal = pagetotal; //总共多少页
    this.pageamount = pageamount; //每页多少条
    this.datatotal = datatotal; //总共多少数据
    this.curpage = curpage || 1; //初始页码
    this.ul = document.createelement('ul');
    this.id = id;
    this.getpage = getpage;
    this.showpagetotalflag = showpagetotalflag || false; //是否显示数据统计
    this.showskipinputflag = showskipinputflag || false; //是否支持跳转
    if(datatotal >0 &&pagetotal>0){
        this.init();
    }else{
        console.error("总页数或者总数据参数不对")
    }
};

// 给实例对象添加公共属性和方法
page.prototype = {
    init: function init() {
        var pagination = document.getelementbyid(this.id);
        pagination.innerhtml = '';
        this.ul.innerhtml = '';
        pagination.appendchild(this.ul);
        var that = this;
        //首页
        that.firstpage();
        //上一页
        that.lastpage();
        //分页
        that.getpages().foreach(function (item) {
            var li = document.createelement('li');
            if (item == that.curpage) {
                li.classname = 'active';
            } else {
                li.onclick = function () {
                    that.curpage = parseint(this.innerhtml);
                    that.init();
                    that.getpage(that.curpage);
                };
            }
            li.innerhtml = item;
            that.ul.appendchild(li);
        });
        //下一页
        that.nextpage();
        //尾页
        that.finalpage();

        //是否支持跳转
        if (that.showskipinputflag) {
            that.showskipinput();
        }
        //是否显示总页数,每页个数,数据
        if (that.showpagetotalflag) {
            that.showpagetotal();
        }
    },
    //首页
    firstpage: function firstpage() {
        var that = this;
        var li = document.createelement('li');
        li.innerhtml = '首页';
        this.ul.appendchild(li);
        li.onclick = function () {
            var val = parseint(1);
            that.curpage = val;
            that.getpage(that.curpage);
            that.init();
        };
    },
    //上一页
    lastpage: function lastpage() {
        var that = this;
        var li = document.createelement('li');
        li.innerhtml = '上一页';
        if (parseint(that.curpage) > 1) {
            li.onclick = function () {
                that.curpage = parseint(that.curpage) - 1;
                that.init();
                that.getpage(that.curpage);
            };
        } else {
            li.classname = 'disabled';
        }
        this.ul.appendchild(li);
    },
    //分页
    getpages: function getpages() {
        var pag = [];
        if (this.curpage <= this.pagetotal) {
            if (this.curpage < this.pagesize) {
                //当前页数小于显示条数
                var i = math.min(this.pagesize, this.pagetotal);
                while (i) {
                    pag.unshift(i--);
                }
            } else {
                //当前页数大于显示条数
                var middle = this.curpage - math.floor(this.pagesize / 2),
                    //从哪里开始
                    i = this.pagesize;
                if (middle > this.pagetotal - this.pagesize) {
                    middle = this.pagetotal - this.pagesize + 1;
                }
                while (i--) {
                    pag.push(middle++);
                }
            }
        } else {
            console.error('当前页数不能大于总页数');
        }
        if (!this.pagesize) {
            console.error('显示页数不能为空或者0');
        }
        return pag;
    },
    //下一页
    nextpage: function nextpage() {
        var that = this;
        var li = document.createelement('li');
        li.innerhtml = '下一页';
        if (parseint(that.curpage) < parseint(that.pagetotal)) {
            li.onclick = function () {
                that.curpage = parseint(that.curpage) + 1;
                that.init();
                that.getpage(that.curpage);
            };
        } else {
            li.classname = 'disabled';
        }
        this.ul.appendchild(li);
    },
    //尾页
    finalpage: function finalpage() {
        var that = this;
        var li = document.createelement('li');
        li.innerhtml = '尾页';
        this.ul.appendchild(li);
        li.onclick = function () {
            var yyfinalpage = that.pagetotal;
            var val = parseint(yyfinalpage);
            that.curpage = val;
            that.getpage(that.curpage);
            that.init();
        };
    },
    //是否支持跳转
    showskipinput: function showskipinput() {
        var that = this;
        var li = document.createelement('li');
        li.classname = 'totalpage';
        var span1 = document.createelement('span');
        span1.innerhtml = '跳转至';
        li.appendchild(span1);
        var input = document.createelement('input');
        input.setattribute("type","number");
        input.onkeydown = function (e) {
            var oevent = e || event;
            if (oevent.keycode == '13') {
                var val = parseint(oevent.target.value);
                if (typeof val === 'number' && val <= that.pagetotal && val>0) {
                    that.curpage = val;
                    that.getpage(that.curpage);
                }else{
                    alert("请输入正确的页数 !")
                }
                that.init();
            }
        };
        li.appendchild(input);
        var span2 = document.createelement('span');
        span2.innerhtml = '页';
        li.appendchild(span2);
        this.ul.appendchild(li);
    },
    //是否显示总页数,每页个数,数据
    showpagetotal: function showpagetotal() {
        var that = this;
        var li = document.createelement('li');
        li.innerhtml = '共&nbsp' + that.pagetotal + '&nbsp页';
        li.classname = 'totalpage';
        this.ul.appendchild(li);
        // var li2 = document.createelement('li');
        // li2.innerhtml = '每页&nbsp' + that.pageamount + '&nbsp条';
        // li2.classname = 'totalpage';
        // this.ul.appendchild(li2);
        // var li3 = document.createelement('li');
        // li3.innerhtml = '合计&nbsp' + that.datatotal + '&nbsp条数据';
        // li3.classname = 'totalpage';
        // this.ul.appendchild(li3);
    }
};