Double-click selected text to block double-click selected text

Double-click selected text to block double-click selected text

 

FF style:-moz-user-select: none;

For browsers other than FF, use onselectstart = "return false" (directly add the tag to be applied)

 

Eg: <div class = "test" onselectstart = "return false" style = "-moz-user-select: none;"> you cannot select me... (Hide the area where double-click the selected text) </div>

How does javascript prevent text from being selected when double-clicking, and the background turns blue?

This is the default function of the browser.
 
Is there any way to shield the mouse from double-clicking

I don't understand what you mean.
If you want to prevent others from moving your specific files, you can install them in an encrypted folder or set multiple users and add the administrator password.
Double-click the mouse to use special software. DoubleClickFix