Pls whats bull strap angular js and physics js for

Answer 1

Bootstrap is ui library.
AngularJs is JS library for make thing like js do.
Physics Js is physic engine for js.

Answer 2

@Nithiwat 😒
Angular 1 is normal framework that working only on front-end

But
Angular 2 is more than framework. This version is the big framework that can working on both front-end and back-end

Answer 3

wow!!..thanks for the answer