Check if copy and paste is enabled

Question

In Firefox (at least) JavaScript copy and paste features are disabled by default. Is there anyway to check if functionality is available, so I can hide some buttons if it is not?

Answer 1

Tested in IE8, FF3.6.10, Chrome 3.0.195. Safari 4.0:

if(typeof(window.clipboardData)=="undefined") {
  alert("not working")
}
else {
  alert("working")
}