How do I change the checked options in the element-ui checkbox with buttons?

want to change the selected option in the marquee through the button

related codes

https://jsfiddle.net/vr8ymb26/5/

The expected result of

is to change the value of checkedCities by clicking the button, and then change the value of the checkbox, but clicking does not change

Mar.26,2021

doesn't quite understand what your problem is.
look at your code, no matter which cities are selected now when you click the button, you will choose Guangzhou or Shenzhen.
what do you mean the click hasn't changed?

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e49497-44d3e.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e49497-44d3e.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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