# Storing Data in React

* Data local to a component i.e. data which is not required to be shared across app or components:

1. Use component's local **state**
   * Use `this.state.onChange()` method to change the local state data and trigger a re-render of DOM
2. Use class level variable

   e.g. `public someLocalVar` or `private someLocalPrivateVar`

   Do not use class level variable for anything that you want to trigger re-rendeing of DOM

* Data to be used across application or across multiple components:
  1. Use Redux store and associate/connect your props variables with the global Redux store using the **connect** wrapper and a **mapStateToProps** function.


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