How do I call a custom method in a child component of a loop in vue2?

there is child component B in parent component A, but child component B is looped out. In this case, how to call the custom method in component B?
use this.$refs to report errors

clipboard.png

Mar.06,2021

loops out an array $refs you can print it and see

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-64f5-1e5dcb7-5a7a8.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e5dcb7-5a7a8.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?