dblclick event in Firefox extension

Question

I'm using the following code in firefox extension, that should alert when double click event occur, but when I double click nothing happens.

var Test = {
x: function(e) {
  alert(e.target.defaultView.location.href);
}

}

window.addEventListener("dblclick", function(e) { Test.x(); }. false);

Answer 1

Try changing the dot to a comma before the last parameter:

window.addEventListener("dblclick", function(e) { Test.x(); }, false);
//                                                          .^.
//                                                           | here...

Update

Your closure also expects a parameter e to be passed to it:

window.addEventListener("dblclick", function(e) { Test.x(e); }, false);