/**  * 分页插件类(缺少每页的显示数，listrows明天写)  * @param page {Number} 当前页  * @param pagesize {Number} 每页记录数  * @param total {Number} 总记录数  * @constructor  */ function Paginate(page, pagesize, total){     if(!page || page <1){         page = 1;     }     if(!pagesize || pagesize<1){         pagesize = 20;     }     if(!total || total <0){         total = 0;     }     this.pagesize = pagesize;     this.total = total;     if(this.total%this.pagesize ===0){         this.maxpage = parseInt(this.total/this.pagesize);     }else{         this.maxpage = parseInt(this.total /this.pagesize) + 1;     }     if(page>this.maxpage){         this.page = this.maxpage;     }else{         this.page = page;     } } /* * 当前开始的条数 */ Paginate.prototype.first = function(){     var first = (this.page-1)*this.pagesize;     if(first>this.total){         return (this.maxpage-1)*this.pagesize;     }     return first; } /* * 当前页最大的条数 */ Paginate.prototype.last = function(){     var last = this.first()+this.pagesize;     if(last>this.total){         return this.total;     }     return last; } /**  * 上一页  * @returns {number}  */ Paginate.prototype.prev = function(){     if(this.page <= 1){         return false;     }     return this.page-1; } /**  * 下一页  * @returns {*}  */ Paginate.prototype.next = function(){     if(this.page >= this.maxpage){         return false;     }     return (parseInt(this.page)+1); } module.exports = Paginate;

var Paginate = require("../plugin/Paginate"); var q = req.query.q; var paginate = new Paginate(q, 10, 185); var page = paginate.page;//当前页数 var first = paginate.first();//当前第一条 var last = paginate.last();//当前最大条数 var maxpage = paginate.maxpage;//总页数    var pagesize = paginate.pagesize;//每页显示数 var total = paginate.total;//总记录数 var prev = paginate.prev();//上一条 var next = paginate.next();//下一条 res.json({page:page, first:first,last:last,maxpage:maxpage,pagesize:pagesize, total:total,prev:prev,next:next})