shadowcodex

// Assuming you have included the firebase script tag above this javascript
// For reference here is the tag: <script src="https://cdn.firebase.com/js/client/2.3.2/firebase.js"></script>

// Assumes you have already authenticated the user.

// Setup your firebase reference
var ref = new Firebase('https://your-app.firebaseIO-demo.com/');

// Setup a way to get your userid (Assuming using provided firebase authentication method...)
function getUser(authData) {

anantn

function go() {
  var userId = prompt('Username?', 'Guest');
  checkIfUserExists(userId);
}

var USERS_LOCATION = 'https://SampleChat.firebaseIO-demo.com/users';

function userExistsCallback(userId, exists) {
  if (exists) {
    alert('user ' + userId + ' exists!');