explain to me difference between AR, VR and Mixed Reality.
AR (Augmented Reality) refers to the technology that overlays digital information on the real world. AR enhances one's current perception of reality with computer-generated images and sounds, providing an interactive and immersive experience.

VR (Virtual Reality) refers to a computer-generated simulation of a three-dimensional image or environment that can be interacted with in a seemingly real or physical way. VR completely replaces the user's real-world environment with a virtual one.

Mixed Reality (MR) is a hybrid of AR and VR, where the real world and virtual world coexist and interact with each other. In MR, virtual objects are seamlessly integrated into the real world and can be manipulated as if they were real, physical objects.

To summarize, AR enhances reality, VR replaces reality, and MR blends real and virtual reality.
What are some javascript frameworks I can use to create AR, VR, and Mixed Reality apps?