Vue project city selection page-advanced use of Vue and localStorage

Advanced use of Vue and localStorage

If you refresh, you will find that it has changed back to the original. We need to fix this bug.

1. Because the project has to be taken apart in the enterprise. Two are defined, one for state and one for mutation
   
2. state.js, localStorage is used here to determine whether there is a change.
   
3. mutation.js
   
4. Advanced usage, so that our shared data does not have to be so troublesome. Don’t use it. The
   
   original is like this.
   
   It can also be used like this. The
   
   above is as follows