express4-mongo

Install

npm install express4-mongo

use

const express = require('express');
const database = require('express4-mongo')
var app = express();
app.use(database({
    database: "lemon", //dbname
    host:"" // Your mongodb Host
}))

find

in express route

router.get('/', function(req, res, next) {
    const db = req.db // db object

     db
        .collection('news')
        .find({},function(err, result){
            //result in here
        })

})

limit or skip or sort

router.get('/', function(req, res, next) {
    const db = req.db // db object

     db
        .collection('news')
        .find({},{
            limit:5,
            skip:5,
            sort:{_id:-1} // reverse 1 normal
        },function(err, result){
            //result in here
        })
})

update

db.collection('users').update(
    {username:username}, //query
    {remove:false}, // update data
    function(err,result){
        // result
    })

remove

 db.collection('users').remove(
     {username:username}, //query
    function(err,result){
        //result
    })

insert

db.collection('users').insert({
    username:username,
    email:email,
    phone:phone,
    password:password 
},function(err,result){
    // result
})