Click on the browser to return to the previous step

Why does the js, page not refresh when you click on the browser to return to the previous step?

Mar.11,2021

because clicking on the previous step is only a local refresh, so JS is executed, which does not affect the entire page refresh

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-64f5-1beb36d-311d9.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1beb36d-311d9.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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