A reducer is a pure function that calculates the next state based on the initial or previous state. It always produces the same output if the state is unchanged. It takes two inputs, and state and a…
Lexical “this” a feature that forces the variable “this” to always point to the object where it is physically located within.
Every component does two things:
1. Render DOM based on some data. This data is called as a“state”.
2. Listen to the user and other events and send them to JS functions. These are called “Actions”.