"Copy" function in Firefox

Question

JavaScript

I am writing a custom script for greasemonkey. It is necessary to implement the function of copying text. Something the search did not give anything good. Tell me, is this possible?

Answer 1

You can't achieve this with javascript. Although, if the script is only for Firefox, then try

function copyToClipboard(text){  
        unsafeWindow.netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");  
        var clipboardHelper = Components.classes["@mozilla.org/widget/clipboardhelper;1"].
        getService(Components.interfaces.nsIClipboardHelper);  
        clipboardHelper.copyString(text);
    }
}

Otherwise, look here: https://github.com/jonrohan/ZeroClipboard
One significant disadvantage is that this solution requires a flash.
There are old articles:
http://brooknovak.wordpress.com/2009/07/28/accessing-the-system-clipboard-with-javascript/
and
http://almaer.com/blog/supporting-the-system-clipboard -in-your-web-applications-what-a-pain