• In front-end JavaScript framework and library open source, most of the web developers, would agree upon the fact that both Angular and React.
• Since Angular arrived much in advance in evaluation to React, it have become one of the widely used programming languages to constructed best web
• In single-page applications, One of the other factors that worked in its favour was the support and trustworthiness of Google, helping the developers to solve many issues related to development.
• In paradigm, there was a drift  made up on the center stage once React.
• The developers also started to moving from Angular to React as it was much better than Angular in terms of speed, efficiency, view library, simple API, and lightweight components.
• For developers, Angular had a few drawbacks causing problems and irritation. They started to look for other alternatives.

Key Features of AngularJS:

• Observables are just a few of Angular’s highlights and Built-in support for AJAX, HTTP.
• Inline with current technologies.
• Error-handling support has been improved.
• Local CSS / shadow DOM.
• Typescript is time-saving.
• Validation and forms.

Key Features of ReactJS:

• It is  ability to use third-party libraries.
• Saving the time.
• Simplicity and Composability.
• lightning-fast speed and Improved user experience.
• More rapid development
• One-directional data binding provides code stability
• Reacts the component.