Author Archives: Dhananjay Kumar

Thank you for ng-India 2020, find Photos and Resources here.

Hey there! I’m Dhananjay Kumar, organizer of India’s Largest Angular Conference, ng-India. I thank you for participating in ng-India on 29 Feb 2020 in Delhi. It is you, who has made ng-India, India’s (or perhaps Asia’s) Largest Angular Conference. I hope you had a good time learning from esteem speakers from across the world, youContinueContinue reading “Thank you for ng-India 2020, find Photos and Resources here.”

Video – Step by Step using TypeScript in a Node.js Application

This video explains steps to use TypeScript in a Node.js application. You can read step by step article on the same here –  here Download source code from here https://www.youtube.com/watch?v=fOkAMBVyuo0   To start with create a folder and run npm init command inside the folder. After that install these dependencies,  npm install -D typescript npm installContinueContinue reading “Video – Step by Step using TypeScript in a Node.js Application”

Video- Why You need the apply() and the call() methods in JavaScript

To pass value of ‘this’ object in a function apply and the call methods are used. https://youtu.be/1nG3FKN3KjU   The apply() and the call() methods are used to call a function indirectly. When you call a function using the apply() and the call() methods, that is called Indirect Invocation Pattern . The first parameter is alwaysContinueContinue reading “Video- Why You need the apply() and the call() methods in JavaScript”

Video – Various ways of creating a function in JavaScript

This video teaches you the various ways of creating a function in JavaScript. There are four ways a function can be created in JavaScript. They are as follows: 1. A function as a Statement 2. A function as an Expression 3. A function as an Arrow function 4. A function using Function constructor   https://youtu.be/1koTc_lhZLUContinueContinue reading “Video – Various ways of creating a function in JavaScript”

Five Things about JavaScript delete operator

A better understanding of delete operator is necessary for JavaScript developers. As the name suggests, the delete operator deletes properties from the object.  You can delete a property as shown below: It returns true on successful deletion. However, in some cases, it may return true even if it does not delete a property. In thisContinueContinue reading “Five Things about JavaScript delete operator”

Summary of the Year 2019

Dear Readers and Community Member, I thank you for all your support, love, and respect in 2019. You have been a constant companion since 2009, and I could not imagine my life without you. Once again, thank you. For me, the Highlight of 2019 was that in May I successfully summited Mount Everest Base Camp.ContinueContinue reading “Summary of the Year 2019”

Step by Step using TypeScript in a Node.js Application

https://youtu.be/fOkAMBVyuo0 Download or clone source code from here In this blog post, you are going to learn to configure the Node.js application to use TypeScript.  At the end of the blog post, you will have a REST API created using TypeScript and Express in Node.js. Before starting to make sure that you have NodeJS installedContinueContinue reading “Step by Step using TypeScript in a Node.js Application”

All about NaN in JavaScript

In JavaScript, NaN is one of the most confusing concepts; hence, it is often asked in the interview. You may have come across questions such as, What is NaN What is the type of NaN How to check for the NaN What is the difference between isNaN() and Number.isNaN() In this post, let us learnContinueContinue reading “All about NaN in JavaScript”