Node JS Archive
01 Feb 2015
Insert a document using NodeJs and mongoDB
Insert a document using Node.js and mongoDB Suppose you have a mongoDB database for courses and you want to insert a record into the database using Node.js. First step is to install mongoDB driver for Node.js If it is not already installed. Please open command line and run following command. > npm install mongodb This
17 Jan 2015
NodeJs and Express framework basics
NodeJs and Express framework basics We have already learned how to select data from MongoDb using Nodejs findOne. In this article we will create a baisc Hello World program using NodeJs and Express. Consider a following program below. var express = require('express'), app = express(); app.get('/', function(req, res) { res.send("Hello World!"); }); app.get('*', function(req, res)
12 Jan 2015
Node Js, MongoDb select record with findOne
Node Js, MongoDb select record with findOne To select a single record from mongoDB database using findOne() function in Node Js var MongoClient = require('mongodb').MongoClient; //Open the connection to server MongoClient.connect('mongodb://localhost:27017/test', function(err, db){ if(err) throw err; db.collection('people').findOne({}, function(err, doc){ if(err) throw err; console.log(doc); db.close(); }); console.dir("Called findOne"); }); In the code below we use require
16 Sep 2014
NodeJS – select data from mongoDB collection
Suppose we have a collection in MongoDB database, We want to select data from collection then we can do like the program below. Suppose we have a collection ( Like table in Relational DBMS) named grades and this collection is in course database. Grades collection contains fields like _id, student, grade and so on… now
07 Jan 2014
Node JS – Reading command line input
In languages like c++, java we can take command line input from user using standard i/o libraries. But JavaScript is used in browser and we never need to take input from user on command line, here Node JS fills the gap using its own libraries know as modules.
01 Nov 2013
What is Node.JS
Node.js is an upcoming new technology that has already got a lot of attention. Top notch tech companies like Microsoft, VMWare, Ebay, Yahoo, and many more are using node. Node.js is the amazing skill to open up new career opportunities for a programmer.