[page Viewport problem] what is the relationship between layout viewport size and zooming?

when I was learning layout viewport, I learned that scale scaling does not affect the size of the layout viewport. The size of the layout viewport is the same when zooming, but when using scale to solve the 1px problem, it is as follows: 

<meta name="viewport" content="inital-scale=0.5, width=device-width">

both the width of the layout viewport and the vistual viewport I got are doubled! So doesn"t it mean that scale will affect the size of layout viewport? Does the width of layout viewport have anything to do with the width of vistual viewport?

Mobile-web front-end
Apr.07,2022

I think it's better not to change the scale here, which will affect the layout of the entire page.

initial-scale initially sets layout viewport to be the same as vistual viewport

initial-scale = 0.5 means that the layout viewport will not be affected after the user touches the screen to zoom, because the layout is not affected

initial-scale = 0.5 is equivalent to shrinking the screen
initial-scale = 2 is equivalent to enlarging the screen

when initial-scale = 0.5, the layout viewport layout viewport = ideal viewport / 0.5 = 750
zooms out when the layout viewport is displayed in the ideal viewport of 375.At the same time, the visual viewport corresponds to the width of the layout viewport of 7500.So the visual viewport is equal to 750mm

.

Previous: Uwb indoor positioning, dotting on indoor pictures, is there any good way to achieve the front end?

Next: Does prettier format vue code not work after vscode is updated to the latest version?

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-64f5-1b3149f-34130.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3149f-34130.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?