about

according to AutoStore of Basic principle, It has a built -in state change event system for monitoring State the changes in the data in the state will trigger the corresponding event when the state data changes. You can use it through listening events watch to monitor State data changes can execute the listener function when the monitored data occurs.

Provide three uses watch how to:

• Call store.watch function, used to listen to State data change.
• Directly State statement watch function, and then write the return value of the listener to the statement watch the position where the function is located.
• Called in the component store.useWatch function, used to listen to store the change of the object is automatically canceled when the component is destroyed.