Check if copy and paste is enabled

Question

On Firefox (at least) JavaScript copy and paste functions are disabled by default. Is there anyway to check if the functionality is available so i can hide some buttons if its 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")
}