javascript - removeEventListener is not working

Question

I don't know what I am doing wrong but here is an example of what I am doing and it doesn't seem to work.

someDom.addEventListener('mousemove',function(ev) {self.onInputMove(ev)},false);

someDom.removeEventListener('mousemove',self.onInputMove);

The removeEventListener code is executed but it just doesn't remove the 'mousemove' listener

Answer 1

removeEventListener removes the listener that exactly matches the function that was added.

In this case, the function that addEventListener added was:

var some_func = function(ev) {
    self.onInputMove(ev);
};

Store a reference to the actual function and you'll be good. So for example, the following should work:

someDom.addEventListener('mousemove',self.onInputMove,false);

someDom.removeEventListener('mousemove',self.onInputMove,false);