WeChat Mini Programs: similar to Tab, it is slideable and clickable, but I want to realize that when I click on a view, there is an icon at the bottom to slide to the specified position. What should I do?

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want to implement when I click on a view, a white triangle at the bottom slides to the specified position, what should I do?


listens for their click events, and then changes their css to show or hide that triangle

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-64f5-1b2bcba-2b317.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b2bcba-2b317.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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