node实现分页查询的方法

//文章列表显示
 p.container 
 if(articals.length > 0)
 p.container.clear
 - for(var i=0;i<articals.length;i++)
 .col-lg-6.col-md-6.col-sm-12
 p.panel.panel-default
 .panel-heading
 a.block.bold(href = '/details?id=#{articals[i]._id}')= articals[i].title
 p.panel-body.height50!= articals[i].detail
 p.panel-footer
 span.glyphicon.glyphicon-user(aria-hidden = "true")
 span(style = "margin-right:20px;margin-left:5px;")= articals[i].author
 span= articals[i].createDate //添加分页
 p#pager.text-center.col-lg-12 col-md-12 col-sm-12
 .empty
 .empty
 script(type="text/javascript").
 layui.use(['laypage', 'layer'], function(){
 var laypage = layui.laypage;
 laypage.render({
 elem: 'pager'
 ,count: #{total}
 ,curr:('#{page}'||1)
 ,jump: function(obj, first){
 if(!first){
 window.location.href = '/index/'+obj.curr;
 }
 }
 });
 }); else
 h2 快去发表一篇文章吧~ #footer
 .container.text-center
 p 版权所有 © 2017 LorettaXiongField

var express = require('express'); 
var mongoose = require('mongoose');require('../models/schema');var article = mongoose.model('Article');var user = mongoose.model('User');var url = require('url');var router = express.Router(); 
//处理get请求router.get('/', function(req, res, next) { 
 var con = [];
 article.find({}).exec(function(err, doc){
 var total = doc.length; //按时间顺序查找前10条文章的数据
 article.find({}).sort({createDate: -1}).populate('creator', 'name').limit(10).exec(function(err, character){
 //添加容错措施
 if(err){
 console.log(err);
 }else if(character.length == 0){ //没有任何文章，就直接返回
 console.log('no articles!');
 res.render('index', { 
 title: '首页', 
 articals : con
 }); 
 }else{ for(var i = 0; i < character.length; i++){
 con[i] = {
 _id: character[i]._id,
 title: character[i].title,
 detail: character[i].text.replace(/<[\/]{0,1}[a-zA-Z\s"'=;]{1,}>/g, ''),
 author: character[i].creator.name,
 createDate: character[i].createDate
 };
 } //返回文章总数以及前10条数据
 res.render('index', { 
 title: '首页', 
 total: total,
 articals : con
 }); 
 }
 });
 })
}); 

//处理带有页码参数的get请求router.get('/index/:page', function(req, res, next) { 
 var con = []; var pageNum = parseInt(req.params.page); var Creator; if(pageNum){
 article.find({}).exec(function(err, doc){
 var total = doc.length; //按时间顺序查找从第[(页码-1)*10]条数据开始的10条文章的数据
 article.find({}).sort({createDate: -1}).populate('creator', 'name').skip((pageNum-1)*10).limit(10).exec(function(err, character){
 //添加容错措施
 if(err){
 console.log(err);
 }else if(character.length == 0){
 console.log('no articles!');
 res.render('index', { 
 title: '首页', 
 articals : con
 }); 
 }else{ for(var i = 0; i < character.length; i++){
 con[i] = {
 _id: character[i]._id,
 title: character[i].title,
 detail: character[i].text.replace(/<[\/]{0,1}[a-zA-Z\s"'=;]{1,}>/g, ''),
 author: character[i].creator.name,
 createDate: character[i].createDate
 };
 } //返回新的页码以及相应的10条数据
 res.render('index', { 
 title: '首页', 
 total: total,
 page: pageNum,
 articals : con
 }); 
 }
 });
 });
 }
}); 

module.exports = router;

var path = require('path');
 var logger = require('morgan');
 var http = require('http');
 var favicon = require('serve-favicon');
 var mongoose = require('mongoose');
 var bodyParser = require('body-parser');
 require('./models/schema');
 var user = mongoose.model('User');
 var cookieParser = require('cookie-parser');
 var session = require('express-session');
 var app = express();
 //日志设置app.use(logger('dev'));
 //图标设置app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
 //视图设置app.set('view engine', 'jade');
 app.set('views', path.join(__dirname, 'views'));
 //静态文件设置app.use(express.static(path.join(__dirname, 'public')));
 //表单数据解析app.use(bodyParser.json());
 app.use(bodyParser.urlencoded( {
 extended: true }
));
 //路由设置var routes = require('./routes/index');
 app.use('/', routes);
 //服务器设置var server = app.listen(8081, function () {
 var host = server.address().address var port = server.address().port console.log('server start on 127.0.0.1:8081');
}
)