Dhananjay Kumar

  • Speaking
  • Angular Master class
  • Video – Step by Step Create Node.js REST API with SQL Server Database

    In this video, learn to create a Node.js API to perform CRUD operations on a database in SQL Server. You can find the source code here : https://github.com/debugmodedotnet/sqlservernodejsrestapi For notifications of the further videos, subscribe to the <geek97/> Youtube channel here : https://www.youtube.com/c/geek97

    Dhananjay Kumar | Angular Teacher | Angular Consultant | ng-India

    August 24, 2020
    Video
    Express, Nodejs, sqlserver
  • Master RxJS: Part 2 – What is an observer

    This is the second post in the Master RxJS series. The first post is a video tutorial that explains, why RxJS Watch it here: In this post, we will discuss an observer in RxJS. An observer is an object with three call-back functions to subscribe to the notifications from an Observable. Too much technical jargon? […]

    Dhananjay Kumar | Angular Teacher | Angular Consultant | ng-India

    August 18, 2020
    JavaScript
    Javascript, observer, RxJS
  • How to make the length of an Array read-only in JavaScript

    Sometimes, you may come across a requirement that once the array is created, its length should not be changed. In this blog post, let us explore how you can achieve that. Let us say you have an array as shown below, let foo = ['1', '11']; console.log(foo.length); // 2 console.log(foo[1]); //11 As you see, the length of the array is 2, and […]

    Dhananjay Kumar | Angular Teacher | Angular Consultant | ng-India

    August 8, 2020
    JavaScript
    Array, Javascript, length
  • Change Detection in Angular

    Change Detection is the backbone of the Angular framework, and each component has its own change detector. This article explains change detection strategies and optimizations to help you write highly performant Angular applications. Angular can detect when data changes in the component, and can re-render the view to display the updated data. Angular makes sure […]

    Dhananjay Kumar | Angular Teacher | Angular Consultant | ng-India

    July 31, 2020
    Angular
    Angular
  • Video- Master 3 important concepts of JavaScript

    In this webinar learn 3 most important concepts of JavaScript. How to calculate the value of ‘this’ inside a function All about object literals function constructors and prototypes

    Dhananjay Kumar | Angular Teacher | Angular Consultant | ng-India

    July 30, 2020
    JS Videos
    constructor, Javascript, prototype, this, Video
  • Link Constructors prototypes to create Inheritance in JavaScript

    In JavaScript, there are multiple ways to create an object. However, among all the most popular is using a function as a constructor.   A function returns a newly created object if it is called using the new, which is also known as Constructor Invocation Pattern. You can create a function constructor like any other […]

    Dhananjay Kumar | Angular Teacher | Angular Consultant | ng-India

    July 24, 2020
    JavaScript
    Functions, Javascript, prototypes
  • How Object.entries work internally in JavaScript

    In JavaScript, the Object.entries method returns an array of object’s own enumerable properties. It returns properties as a [key, value] pair, where the key is a string. You can read enumerable properties as an array of key-value pairs using the Object.entries method as shown below, let Product = {     Title: ‘Book’,     Price: 120,     Author: undefined,     inStock: true } console.log(Object.entries(Product)); Since it returns […]

    Dhananjay Kumar | Angular Teacher | Angular Consultant | ng-India

    July 16, 2020
    JavaScript
    Interviews, Javascript, object, Tips
  • Video – Master RxJS: Part 1

    Dhananjay Kumar | Angular Teacher | Angular Consultant | ng-India

    July 16, 2020
    JS Videos
    Javascript, RxJS, Videos
  • Working with objects in a JavaScript Arrow Function

    The JavaScript Arrow function is a shorter way of writing a function expression. Let us say you have a function expression as below, var add = function (num1, num2) {     return num1 + num2; } The above function can refactor for a shorter syntax using the arrow function as below, var add = (num1, num2) => num1 + num2;  So, as you see, the arrow function provides a convenient and short syntax […]

    Dhananjay Kumar | Angular Teacher | Angular Consultant | ng-India

    July 15, 2020
    JavaScript
    arrow functions, Interviews, Javascript, Objects
  • Why use new.target inside a function in JavaScript – Simplified

    There are four invocation patterns in JavaScript, which means you can call a function in four possible ways. They are, Function Invocation Pattern Constructor Invocation Pattern Method Invocation Pattern Indirect Invocation Pattern Essentially, these four-invocation patterns determine the value of ‘this’ object inside a function.  Let us consider the function created below, function add(num1, num2) {     console.log(this); // global object  } […]

    Dhananjay Kumar | Angular Teacher | Angular Consultant | ng-India

    July 8, 2020
    JavaScript
    constructor, globalobject, Javascript, new.target
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Dhananjay Kumar

Dhananjay Kumar is a teacher and consultant from India.

He is the best-selling author of the Angular Essentials book and a Google Developer Expert in Angular. He also organizes ng-India, one of the largest Angular conferences in the world.

ADDRESSGurgaon, India

Gurgaon , India

debugmode[at]outlook[dot]com

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