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I am new to react/redux. I am trying to figure out how all the pieces in redux interact. The one thing giving me trouble is understanding the relation between actions and reducers,store.
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Reducers: As we already know, actions only tell what to do, but they don't tell how to do, so reducers are the pure functions that take the current state and action and return the new state and tell the store how to do.
A store is an immutable object tree in Redux. A store is a state container which holds the application's state. Redux can have only a single store in your application. Whenever a store is created in Redux, you need to specify the reducer.
Actions are the only source of information for the store as per Redux official documentation. It carries a payload of information from your application to store. As discussed earlier, actions are plain JavaScript object that must have a type attribute to indicate the type of action performed.
Introduction. In Redux, a reducer is a pure function that takes an action and the previous state of the application and returns the new state. The action describes what happened and it is the reducer's job to return the new state based on that action.
It's pretty simple when you think about it:
Reducer is usually in a format of a switch statement, that switches between all possible Actions (Cases) and then manipulates the Store data based on action. When a reducer data changes within the redux, the properties in your components are changed and then the re-render ocurrs.
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