Bootstrap js two-level linkage query problem

when you select IP:192.168.1.29, you can get game clothes: 1002, 1003, 1004

ip:192.168.1.29:4000140002

IP:192.168.1.29

html

Ajax javascript bootstrap

Jul.19,2021

I haven't used multiSelect
I don't think we can directly empty and html initialize the content of multiSelect.
see how the multiSelect document modifies the content. Use its own method

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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-64f5-1b39256-2c185.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b39256-2c185.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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