How to use code to prevent Firefox from selecting pop-up windows for downloading files by default

problem description

in the process of downloading files at the front end, you need to cancel the download, but the following pop-up window will pop up in Firefox. How to block it with code? the download is realized through blob

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Dec.29,2021
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-64f5-1e493cc-4c422.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e493cc-4c422.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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