How does jest specify the current ua information, such as specifying ua as a mobile device?

scenarios are as follows:

I wrote the code related to the end touch event, which determines whether to use the touch event or the mouse event according to ua and ("touchstart" in window)).

but when testing jest, the default ua is PC. How to change ua to mobile?

Javascript vue.js react.js jest
Sep.27,2021

has been solved. Ask and answer yourself
configure
clipboard.png

in jest.config as follows

Previous: How to store in-class members in shared memory?

Next: React.js wrong report, map is not function, can you give me some ideas?

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
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-64f5-1ea8030-1ea0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1ea8030-1ea0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?