Browser-compatible JavaScript code for disabling right-click

 

Today, Baidu Knows That someone asked how to use JavaScript to disable the page right-click.

 

Write

 

Document. oncontextmenu =   Function (E ){
If (E && E. Button =   2   && E. preventdefault)
E. preventdefault ();
Else
Window. event. returnvalue =   False ;
}

[Right-click the current page to test]

 

However, it is found that it is only compatible with IE and Firefox, but opera does not have event response. I don't know how to solve it?