The tree component of elementUI, how to make the nodes of some data highlight by default?

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there are hasData fields in the data returned by the backend, and some hasData=0, have some = 1. I want to highlight these = 0 data by default when rendering. What should I do?

May.22,2021

call setCurrentKey ()

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-64f5-1b40120-2c4d8.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b40120-2c4d8.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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