Actions are the plain JavaScript objects which contain a type field. Action can be considered as an event that can describe something that has happened in the application.

Always remember actions should contain a small amount of information that is needed to mention what has happened.

Also Read: Next js Interview Questions
BY Best Interview Question ON 31 May 2021

Example

const addTodoAction = {
      type: 'ADD',
      payload: 'Buy-milk'
}