What is Angular 7?

Angular 7 is a JavaScript (actually a TypeScript based open-source full-stack web application) framework which makes you able to create reactive Single Page Applications (SPAs). Angular 7 is completely based on components. It consists of several components which forms a tree structure with parent and child components. Angular's versions beyond 2+ are generally known as Angular only. The very first version Angular 1.0 is known as AngularJS.

"Angular is a complete rewrite of AngularJS by the same team that built AngularJS."

What is Single Page Application (SPA)?

A single page application is a web application or a website which provides users a very fluid, reactive and fast experience similar to a desktop application. It contains menu, buttons and blocks on a single page and when a user clicks on any of them; it dynamically rewrites the current page rather than loading entire new pages from a server. That's the reason behind its reactive fast speed.

Difference between AngularJS and Angular

AngularJS	Angular
AngularJS is common and popular name of the first version of Angular1.0.	Angular is common and popular name of the Angular's version beyond 2+
AngularJS is a JavaScript-based open-source front-end web framework.	Angular is a TypeScript-based open-source full-stack web application framework.
AngularJS uses the concept of scope or controller.	Instead of scope and controller, Angular uses hierarchy of components as its primary architectural characteristic.
AngularJS has a simple syntax and used on HTML pages along with the source location.	Angular uses the different expression syntax. It uses "[ ]" for property binding, and "( )" for event binding.
AngularJS is a simple JavaScript file which is used with HTML pages and doesn't support the features of a server-side programming language.	Angular uses of Microsoft's TypeScript language, which provides Class-based Object Oriented Programming, Static Typing, Generics etc. which are the features of a server-side programming language.
AngularJS doesn't support dynamic loading of the page.	Angular supports dynamic loading of the page.

Angular 7 vs Angular6 vs Angular2 vs Angular1

Angular1 was initially released in 2010. It was the first Angular version. It created a revolution in the web application development. It was a browser side JavaScript which was used within HTML code. It is popularly known as AngularJS.

Angular2 was a complete rewrite of Angular1. It was initially released in 2016. There is nothing common between Angular2 and Angular1 except the core developer's team. Angular2, Angular 6 and Angular 7 are very similar to each other. Angular 7 is the latest version. It contains the extensive features of Angular2 and Angular6. These versions are known as Angular.

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