When is the vue custom instruction update hook triggered?

wrote a v-focus instruction to automatically add focus, to input and only set v-focus to the first input of the form, typing in other input will trigger update.
so what triggered update?

Mar.06,2021

and the update of the component are Synchronize, and the updates in vue are also component-by-component.


you can add judgment conditions to vMustus = ""

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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-64f5-1e4886c-44202.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e4886c-44202.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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