LayUI Ajax value transfer problem

how should Ajax be used in LayUI data tables?
does not use a MVC structure.
would like to be more detailed, the newcomer uses Ajax for the first time.
personal understanding: Json returns
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after passing a value in the form of: data post to url data processing.
Mar.10,2021

var $= layui.$;
write this sentence in the var table place.

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-64f5-1b30992-2bd1e.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b30992-2bd1e.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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