How React Works?

ReactJs one of the most popular JavaScript libraries for mobile and web application development.React is a JavaScript library (not a framework) that creates user interfaces (UIs) in a predictable and efficient way using declarative code.

Props vs State Difference

Props (short for properties) are a Component's configuration, its options if you may. They are received from above and immutable.

State is a JavaScript object which contains data that influence how the component looks at a certain point in time. The second part is what makes the state different compared to props. State is just a snapshot of the app in a time.