What is React JS?

This is a JavaScript library created by Facebook that you can use to create user interface components. It makes creating interactive user interfaces easier. Also, understanding and launching the code becomes easier. React JavaScript Framework uses server playback to provide a flexible, performance-oriented solution. The react Java Script Framework utilizes a server-side rendering to offer a flexible performance-centered on the solution.

What is Angular?

Angular is a structural framework for creating dynamic website applications. It enables HTML usable as a template language by developers and syntax in HTML to express components of the app concisely and clearly.

Component

AngularJS

AngularJS features a very complex and stable structure as it has its basis on three typical levels of a model, view, and controller of a single-page app. The object $scope (in AngularJS) is responsible for the "model" part, which is started by the controller and then converted to HTML to create visual effects. AngularJS offers several standard services, factories, controllers, instructions, and other components, which will require JavaScript developers to spend some time mastering them.

React

The developer of React (Facebook) selected a different architecture other than AngularJS and the MVC frameworks. In short, applications built with React do not have any correct structure.

React is a great JavaScript library that we can use to update the outlook for users. However, with React, we cannot create applications ourselves yet. The model and controller layers are not in the library. To bridge this gap, Facebook launched Flux (now in some variants) to control the app's workflow. React offers a straightforward and effective way to create component trees. It features a programming style in which the definitions of the components are declarative. Building your application from React components is like building a JavaScript program using functions.

Data Binding

With data Binding, data is synchronized between business logic and the user interface.

Angular 2 utilizes one- and two-way data binding, and this is the major difference between Angular and React.js. Change in data affects view, while the change in view initiates changes in data.

React utilizes one-way blinding: when designing a React application, developers usually nest child components in the top-level components. One-way binding stabilizes the code and makes it much easier to create troubleshooting applications with React versus Angular. However, one/two-way binding is easier to use and increases the flexibility of the framework.

Resolving Dependencies

AngularJS

AngularJS makes use of a basic object-oriented programming (OOP) pattern known as "dependency injection". This means that the dependencies will be written in a separate file. It is not practical to create dependencies directly on objects. In AngularJS, dependency injection is essential in all the standard functions declared for AngularJS factories or services. AngularJS automatically locates the appropriate object entered as the parameters $routeParams, $filter, store, and $scope. There are two functions in the AngularJS that allow dependency injection: $inject and $provide.

React

What differentiates React from AngularJS concerning dependency injection is that React does not offer the concept of an integrated container for dependency injection. However, this does not mean that we need to think of a way to add dependencies to React projects. You can utilize several tools to automatically add dependencies to the React application. These tools include the Browserify, RequireJS, ECMAScript 6 modules that can be used through Babel, ReactJS-di, etc. The only challenge is choosing the tools to be used.

Universality

React

React is a framework that is applicable both in website and mobile development. Mobile development, however, needs to be integrated into Cordova. There is also an additional framework for mobile development - React Native.

React can create single-page and multi-page web applications.

Angular

Angular is ideal for web and mobile development. However, in mobile development, Ionic does a lot of work. Also, like React, Angular features an extra framework for mobile development. NativeScript is the corresponding version of React Native. Angular is also applicable for single-page and multi-page web applications.

Directives and Templates

AngularJS

The AngularJS directives are a way to organize our code in the DOM. If you are using AngularJS, the only way to access the DOM is through directives. For example, AngularJS features many standard directives like ng-bind or ng-app; however, we can also create our personal directives. This is an effective way to use the DOM. On the other hand, the syntax for creating private AngularJS instructions is not easily understandable.

We can create our own directives in AngularJS for inserting data into templates. The template must have an element with our written directives as an attribute. It's very straightforward. However, AngularJS directives are completely defined; they become sophisticated. The defined object has about ten properties, which we will go back to in the directive. Properties such as templateUrl or template are not hard to comprehend. But it is less clear how (and why) to define priority, endpoint, scope, and other properties. Mastering the syntax of the AngularJS directive is a big challenge.

In summary, in order to bind DOM elements with AngularJS applications, we use directives, both standard and specific.

React

React.js does not provide division in templates and directives or template logic. The template logic must be written in the template. To have a visual glimpse of this, open a sample from GitHub. You will notice that the React. Todo Item application component is created using the standard React.createClass ( ) method. We attach an object with properties to this function. Indicates properties such as the shouldComponent, shouldComponentUpdate, handleKeyDown, or handleSubmit are the representation of templates

At the end of the component, we typically define the rendering property, and that's a template that must be rendered in the browser. Everything is in a place, and the JSX syntax in the template can be easily comprehended, even if you are not familiar with writing in JSX. What happens to the template, the rendering process, and the information that will be presented to it is clear.

This approach is best for defining the template and logic in a place, as we spend less time understanding what is happening in the first place.

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