Vue drop-down menu, click the li list ul display, while the right picture changes color, click itself or other li current ul to close, the picture turns gray?

the basic function has been realized, that is, I don"t know how to write the picture. Now I click on one of them to change color

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Mar.01,2021

can you post your code?
it's too much and too uncertain for you to say so.

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-64f5-1e43857-44a40.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e43857-44a40.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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