A component is a part that combines with other parts to form something bigger. In software engineering, a component is an individual software package, a web service, a web resource, or a module that encapsulates a set of related functions or data. All system processes are placed into separate components so that all of the data and functions inside each component are semantically related, making components modular and cohesive. Components can also be used for event-driven architectures and service-oriented architectures.
In general, a component can refer to any part of a mechanical or electrical system. For example, a car can be considered a component since it allows people to sit. In electronics, a component can refer to electronic parts such as resistors, capacitors, and transistors.
In React, components are independent and reusable bits of code that serve the same purpose as JavaScript functions, but work in isolation and return HTML. Components come in two types: Class components and Function components.
