How to set up vue+element-ui to click the button to make the lines expand and fold

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try to use the official website attribute default-expand-all to click on the switch status value, but it doesn"t work. Is there any solution

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Sep.16,2021

use expand-row-keys, to store the key of the row to be expanded in an array, and then bind it to expand-row-keys

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-64f5-1e48c62-6667f.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e48c62-6667f.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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