Chrome and firefox header th width value problem?

requirements: js dynamically calculates the header width and fixes the header.
problem: the width of the th of thead obtained by using jquery width () is different between the two browsers

chrome:

firefox:

Mar.20,2021
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-64f5-1b35cce-2bfb7.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b35cce-2bfb7.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?