Anil Singh | Code-sample.com

The Constructor Method  - The  constructor()  method is called when the component is initiated (before anything else). Here we can set up the initial state and other initial values. The  constructor()  method is called with the props, as arguments and we should always start by calling the  super(props)  before initiated anything else. Explore to Understand   -  React Lifecycle Components As an Example, import   React   from   'react' ; class   Header   extends   React . Component  {    constructor ( props ) {      super ( props );      this . state  = { msg:   "welcome!" };   }    render () {      return  (       < h2 >{ this . state . msg } you anil</ h2 >     );   } } ...

Angular is a Framework and powered by Google. Use Angular if you love coding in TypeScript. Also if you are a fond of object-oriented programming (OOPs), Angular is definitely you. If you want to use TypeScript use Angular. React is a Library to build UI and maintained by Facebook. Use React if you like flexibility more than other features. Use React if you are a JavaScript lover because it is all about JavaScript. Use React if you want everything is JavaScript. Vue is a library and created by former Google Employee. Vue is an easy JavaScript and HTML. Use Vue if you are a fan of clean code, want separation of concerns of your applications. Vue provides the easiest learning curve and it’s an ideal option for beginners. Vue is ideal for a small team and a small project. If your app seems to be large and has significant future expansion plan, pick React or Angular. Who uses on production? => Angular : Google using it in almost all his product (ex...