• When data is updated in the model, changes propagate to the view
  • When data is updated in the view, changes propagate back to the model

How is two way data binding different from one way data flow?

In one way data flow, views can only update data by dispatching an action that notifies the store about what to change.

Refernces

https://stackoverflow.com/questions/13504906/what-is-two-way-binding