What is angularjs? Why use angularjs?

So today let us understand what Angular is and why we should use it. Come and learn with the editor.

AngularJS Originally developed in 2009 by Misko Hevery and Adam Abrons, which later became Google company projects. AngularJS makes up for the shortcomings of HTML in building applications. It expands the HTML vocabulary in web applications by using identifier (directives) structures, allowing developers to use HTML to declare dynamic content, thus making web development and testing work easier. much easier.

Angularjs version introduction

https://github.com/angular/angular.js/releases/

AngularJS features:AngularJS is HTML designed specifically for applications.

AngularJS makes it easier to develop modern single page applications (SPAs: Single Page Applications).

1 AngularJS binds application data to HTML elements.

2 AngularJS can clone and repeat HTML elements.

3 AngularJS can hide and show HTML elements.

4 AngularJS can add code "behind" HTML elements.

5 AngularJS supports input validation

The main features of Angularjs, which is known as the next generation of web applications, are as follows:

1.MVC

2. Modularization and dependency injection

3. Two-way data binding

4. Instructions and UI controls

1. MVC Architecture

AngularJS uses MVC architecture to develop web applications. To implement MVC, you just split your application and AngularJS manages the rest. The MVC architecture represents Model View Controller, where:

• The model is responsible for maintaining data
• The view is responsible for displaying data
• The controller connects the model and the view

2. Commands

Commands allow you to change the specific operations of HTML tags. This is a very powerful feature that allows you to create custom labels. Using directive tags tells the compiler to add certain functionality to the DOM element and even modify it. AngularJS also provides a large number of preset instructions, which you can choose according to your actual needs.

3. POJO

Every object used in AngularJS is a POJO (traditional JavaScript object), which means you don’t need extra getters and setters function. POJO can provide you with all standard JavaScript functions for object manipulation. It helps you remove and add properties from objects and skip certain objects if needed.

4. Ease of use

AngularJS has a rich feature set that makes the development process easier by reducing the need to write code. It eliminates the need for us to Various difficulties faced when implementing MVC architecture. To implement the data model, you don't need to write getter and setter functions. Additionally, directives are not part of the application code, so they can be managed by other parallel development teams. All this reduces the programming requirements for developers to the greatest extent.

5. Testing through Dependency Injection

An application is incomplete without rigorous testing. In fact, testing is an important way to ensure that there are no bugs in the delivered project. AngularJS already incorporates testing into the build process. Using AngularJS to create applications is fully connected with dependency injection. You can easily inject sample data into the controller to check whether its output results and operation methods are as expected.

6. Client-Side Solution

AngularJS works on the client side but is also compatible with desktop and mobile browsers. AngularJS can be used to create any project without requiring any modifications to the backend, so we can use it to develop the frontend of any application. In addition, since AngulaJS itself is client-side and can run on any browser that supports JavaScript, application deployment becomes easier.

7. Flexible filters

The filter will redefine the value before displaying it, such as changing the decimal point of the value, converting the string to uppercase, etc. . These filters are very similar to directives and can function as independent functions, dedicated only to data transformation tasks. You can also create custom filters based on your needs.

Recommended learning: angularjs tutorial

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