Tips & Tutorials

Welcome to a tutorial and example on how to create a NodeJS live chat application with WebSockets. Yes, it is possible to build an entire live chat driven by pure Javascript. The general mechanics of a live chat are: Create a WebSocket server to accept and manage the connections. Create a live chat page that […]

Welcome to a quick tutorial on how to export from a database to a CSV file with NodeJS. Need to generate a CSV report? Want to export a list from the database? Well, let us walk through a simple example – Read on!     TABLE OF CONTENTS Download & Notes Node Export CSV Extras

Welcome to a tutorial on how to import a CSV file into the database with NodeJS. So you need to “convert” a CSV file into database entries in your project? Well, it is a 2-step process of “read CSV file” and “insert into database” – Read on for a simple example!     TABLE OF

Welcome to a quick tutorial and examples of how to write CSV files in NodeJS. Need to generate a CSV report or save some log entries in CSV format? An easy way to create a CSV file in NodeJS is to: Install the CSV stringify module – npm install csv-stringify. Define the array of data

Welcome to a quick tutorial on how to read CSV files in NodeJS. Need to read some data from a CSV file in Node? Well, it is a piece of cake. One of the easiest ways is to use the CSV parser module. npm install csv-parser Then load the required modules. const fs = require(“fs”);

Welcome to a tutorial on how to add new rows to an existing CSV file in NodeJS. So you need to update a CSV file? Read on for the examples!     TABLE OF CONTENTS Download & Notes CSV Add Rows Extras The End   DOWNLOAD & NOTES Here is the download link to the

Welcome to a beginner’s tutorial on how to save an HTML form into the database in NodeJS. So you have just started with NodeJS, and wondering how to submit and save an HTML form into the database? Well, read on for the example!     TABLE OF CONTENTS Download & Notes Save Form Into Database

Welcome to a quick tutorial and examples on how to write files in NodeJS. Want to create, write, and append to files in NodeJS? Things are a little bit confusing for beginners in NodeJS. There are 2 general ways to write files in NodeJS – Asynchronous and synchronous. To write files asynchronously: require(“fs”).writeFile(“MY.TXT”, “TEXT”); require(“fs”).appendFile(“MY.TXT”,

Welcome to a quick tutorial and examples on how to read files in NodeJS. Reading files, just how difficult can it be? Well, brace yourselves. It’s not that straightforward apparently. The common ways to read files in NodeJS are: To read the entire file into a string asynchronously – require(“fs”).readFile(“FILE.TXT”, “utf8”, (err, data) => {

Welcome to a tutorial on how to crop images in NodeJS. In client-side (browser) Javascript, we have access to the Canvas API and can do all sorts of image yoga with it. But just how do we crop an image in NodeJS then? We can install and use the sharp image library to easily crop