JavaScript

Introduction to callbacks in Node.js

If you are familiar with JavaScript, you may have got acquainted with the concept of callbacks. If not, no worries, as here we will be discussing some basics of callbacks and how they actually work with respect to node.js. You may already know that the type of JavaScript functions is Object. So, just like any other object such as Array or String, we can pass Continue Reading

Dockerizing a NodeJS app with Redis

Hi folks, in this blog I would walk you through how can we seamlessly dockerize a NodeJS app along with redis, So as we know that docker is a pretty decent way of streamlining and making the process of deployment easier, efficient and pluggable, so let’s gets started but before that, the prerequisite for the blog is a basic understanding of docker

Drag N Drop using Angular 7

Drag and Drop is one of the new features which is provided by Angular 7. Angular 7 makes it very easy to implement this feature. So here, in this blog, we are going to learn how to drag and drop the items from a list of numbers using a basic example. Before getting started with the implementation there are some basic pre-requisites which is necessary Continue Reading

Working with Arrays using D3.js

In general, whenever we are using D3  we are using for data visualization and if we try to understand the term data visualization in depth then it is nothing but it is a result of a lot of data manipulation using Array. So before starting working with Arrays using D3.js let’s get the understanding of Arrays briefly. ARRAYS: Arrays is used to store the collection of an Continue Reading

Unit Testing of Angular Service with HttpClient

Services are basically used to allow your code to share the common functionality across the application. Services play a vital role in every Angular application and promote the reusability of code. And to verify that our services are working properly or not we need to test it using unit testing. First and Foremost thing we’ll do is to create the service which is to be Continue Reading

RxJS Subject and its variants

SUBJECT Subject acts as an observable and observer both which do both listen to new notifications and also send/broadcast it to any dedicated component which subscribes to it. So the first step is to import “subject” in your typescript file. import { Subject } from “rxjs/Subject”; and now quickly create a Subject with just a simple line code written below: let newSubject = new Subject(); Continue Reading

Develop Chrome Extension using Angular 7 | Part – 1

Extensions are the small software programs that are used to customize the experience of browsing. They enable the user to customize the browser’s functionality and behavior to individual needs or requirements. An extension is basically there to fulfill a single purpose that is narrow defines and easy to understand. Chrome extensions are in demand because they add features to Chrome browser to do functionalities/things easier Continue Reading

DOM Manipulation Using D3.js

D3 (Data-Driven Documents or D3.js) is a JavaScript library for visualizing data using web standards. It is an open-source JavaScript library developed by Mike Bostock to create custom interactive data visualizations in the web browser using SVG, HTML, and CSS. giving you the full capabilities of modern browsers and the freedom to design the right visual interface for your data.

Manipulating Server returned dates at client Side in Angular

Hey Visitor, Have you ever faced an issue with the date values on your website, when the date and time returned from server doesn’t change according to the client timezone , for eg. values returned from server at US will be different for a client at India so we need to manipulate the received time according to Indian Time Zone. So recently, I encountered this Continue Reading

Getting started with Moment.js: Intro with examples.

I think date manipulation is most common process that every developer must deal in his career. There are so many tools available for Date Manipulation in JavaScript like datejs, date-fns and so many interesting library. Moment.js is one of them. Developer can easily interact with date and time domain problems by using Moment.js. JavaScript Date requires lines of code for parsing , manipulation and validation. Continue Reading

Knolx: Introduction to ReactJs

Hi all, Knoldus has organized a 30 min session on 1st September 2017. The topic was “Introduction to React JS”. Many people have joined and enjoyed the session. I am going to share the slides here. Please let me know if you have any question related to linked slides or video. The slides of the KnolX are here: And Here’s the video of the session: Continue Reading

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