firebase_remove_pushed.js

function pushSomething(ref) {
  // Let's push something. push() returns a reference that you can hold onto!
  var justPushed = ref.push({test: "push"});
  // We return a reference, but you can also return the name of the newly
  // created object with .name().
  return justPushed;
}

function removeItem(ref) {
  // Now we can get back to that item we just pushed via .child().
  ref.remove(function(error) {
    alert(error ? "Uh oh!" : "Success!");
  });
}

function go() {
  var testRef = new Firebase("https://example.firebaseIO.com/");
  var newRef = pushSomething(testRef);
  // Later... should popup an alert that says "null" (No Error).
  removeItem(newRef);
}