Secret copy to clipboard JavaScript function in Chrome and Firefox?

I believe these are predefined Firebug console functions - at least that seems to be the case for Firebug. If you try calling window.copy for instance, you'll get a warning about function not defined, so it's definitely not a browser function, and cannot be used in normal JavaScript files. The following functions also seems to work in the JavaScript console, after playing around with it a bit:

• clear()
• profile()

Running these in the Chrome console reveals the source behind these functions in the Webkit console:

> profilefunction (){return console.profile.apply(console, arguments)}> clearfunction (){InjectedScriptHost.clearConsoleMessages();}> copyfunction (object){if (injectedScript._type(object) === "node")object = object.outerHTML;InjectedScriptHost.copyText(object);}

While the Firebug source also defines a list of functions:

this.clear = function()  // no web page interaction{    Firebug.Console.clear(context);};this.inspect = function(obj, panelName)  // no web page interaction{    Firebug.chrome.select(obj, panelName);};this.keys = function(o){    return FBL.keys(o);  // the object is from the page, unwrapped};this.values = function(o){    return FBL.values(o); // the object is from the page, unwrapped};// etc...

Here you can see the reference copy command of Chrome Dev tools:https://developers.google.com/web/tools/chrome-devtools/console/utilities#copy

You shouldn't use this commands on real JS cross-browsers (just for debugging on the console so-to-speak).