Three development environments of jquery framework, how to extract url and other configuration files separately, and read different environments according to different parameters

the existing pc-side management system, the framework is that jquery, has three sets of development environment (test/dev/prod), each time only by commenting the other two url to read the code, how to use parameters to dynamically read files extracted separately by url; can be set to json files? Ask for the advice of the great god

Mar.22,2021

object match? Does the development environment have markers (similar to a unique id value)

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-64f5-1e444f5-26fe0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e444f5-26fe0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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