VueJS
Lightweight and progressive JavaScript framework for building user interfaces.
Its flexible and intuitive API makes it easy to learn and use, and it's great for building single-page applications.

VueJS is the easiest to learn among the three frameworks.

It has a simpler and more intuitive syntax, making it a great option for beginners.

The framework's progressive nature also allows developers to gradually adopt it into their projects.

ReactJS
Declarative JavaScript library for building user interfaces.

It's highly performant, scalable, and great for building complex, data-driven user interfaces.

ReactJS is more challenging to learn than VueJS due to its declarative syntax and functional programming concepts.

However, once developers understand the concepts, ReactJS can be very powerful and efficient for building complex user interfaces.

Angular
Full-featured JavaScript framework for building large-scale web applications.

It uses a component-based architecture and provides powerful features like two-way data binding, dependency injection, and reactive programming.

Angular is the most difficult framework to learn among the three.

It has a steep learning curve due to its reliance on TypeScript, its complex architecture, and its many features and tools.